0,3(4)=34-3/90=31/90 

1/ Cho \(x+y+x=\sqrt{xy}+\sqrt{yz}+\sqrt{xz}\)( x,y,z>0). Chứng minh rằng: x=y=z

Đề đầy đủ đó bạn!! Giúp mình nha!!

I. Match the words to their definitions.

1. gripping a. funny and interesting
2. scary b. extremely good
3. violent c. causing strong feelings of sadness or sympathy
4. boring d. very surprising, and difficult to believe
5. moving e. not surprising
6. entertaining f. frightening
7. predictable g. using or involving force to hurt or attack
8. hilarious h, very exciting
9. shocking i. not interesting

10. incredible j. extremely funny
II. Complete the sentences with the correct adjectives above
1. The film was so ___________ that Mrs. Brown cried at the end
2. Romance move plots have become so __________________ that you can tell exactly what’s coming
3. My mother can’t stand war film because they’re too ___________________.
4. It was an action film, but it was so __________________ that I fell asleep in the middle
5. We laughed all the way through the film. It was so ______________________.
6. That thriller was so ______________. I couldn’t take my eyes off the screen for a second.
7. Sam always has nightmares after watching ____________ movies
8. The ending of The Sixth Sense was really _____________. It surprised me a lot.
9. The Meyerowitz Stories is getting some ______________ reviews and should be one to add your
watch list.
10. Most historical movies are both educational and __________________.

I. Make sentences using the words given.
1. The roads/ Vietnam/ too/ narrow/ travel/ easily.
_____________________________________________________
2. How far/ it/ your house/ the bookstore?
_____________________________________________________
3. Mai/ used/ go/ school/ foot/ when/ she/ primary school.
_____________________________________________________
4. It/ very important/ obey/ traffic rules/ when/ use/ road.
______________________________________________________
5. It/ ten kilometres/ the town/ the airport.
______________________________________________________
6. Two days ago/ we/ stuck/ traffic jam/ over two hours.

______________________________________________________
7. Most streets/ city centre/ congested/ rush hour
______________________________________________________
8. you/ use/ have/ tricycle/ when/ child?
______________________________________________________

I. Choose the word which best fits each gap.

Staying safe on foot and bike

Look out for yourself and your friends when out (1)________ foot and bike. Choose the (2)
________ routes you can like quieter, slower roads, with pavements if you’re walking or (3) ________
if you’re going by bike.
It’s easy to get distracted by your phone or by friends, but you need to be (4)________ to traffic.
Put your phone away and take your earphones (5)________ when crossing the road. Don’t trust that
drivers (6)_______ spot you and be able to stop in time – many drivers go too fast and don’t (7)
________ enough attention, (8)________ anything you can do to protect yourself is a good thing.
1. a. on b. in c. by d. with
2. a. safe b. safer c. safest d. safely
3. a. zebra crossings b. cycle paths c. footpaths d. bumpy roads
4. a. risky b. warning c. serious d. alert
5. a. off b. over c. out d. down
6. a. must b. will c. could d. should
7. a. pay b. make c. turn d. take
8. a. but b. so c. though d. because

I. Complete the second sentences so that it has the same meaning as the first.

7. Turn left into Lavalle Street and then go straight ahead.
Make _____________________________________________________________
8. Did your father use to drive to work?
Did your father use to travel___________________________________________?

II. Write the correct from or tense of verbs in brackets.
1. ____________________ (you/ ever/ drive) on the wrong side of the road?
2. My family ______________ (fly) back from our Hong Kong holiday two days ago.
3. Right now, the students _______________ (learn) road signs in the schoolyard.
4. Usually Oanh ______________ (walk) to school, but this week she _____________ (ride) her bike.
5. The driver was so drunk that he ______________ (lose) control of his car.
6. If I have enough money, I _________________ (buy) a racing car.
7. My father ________________ (teach) me to ride a bike when I was seven.
8. Transport used ______________ (be) much slower three hundred years ago.
9. Saudi women weren’t allowed ______________ (drive) a car until recently.
10. In South Africa, you have to let animals ________________ (go) first.

III. There is one mistake in each sentence. Find and correct it.
1. I love Thai food now, but I didn’t used to like spicy food.
2. He can drive a bicycle with his hands off the handlebars.
3. We use to walk miles to school every day due to lack of public transport.

4. You are not allowed to drive faster than the number on a limit speed sign.
5. It about 1137 kilometres from Hanoi to Ho Chi Minh City.
6. Bicycles are a cheap and efficient mean of transport.
7. A sign within a red triangle will warn people for something.
8. Be careful when you are on roads. You must drive fast or carelessly!

I. Write the correct tense or form of th verbs in brackets.

1. I -------------- (already/read) that book. It's fantastic.

2. We ----------- (not do) any volunteer work five years ago.

3. James -------------- (do) lots of volunteer work when he was in high school.

4. I think people ------------- (eat) more healthy food in the future.

5. People ----------------- (need) about 2000 calories a day to stay in shape.

6. ----------------- (Alex/ever/be) to Seattle? - Yes,he ------------------- (be) to Seattle once.

7. Right mow, Maraget -------------- (have) a shower. Do you want to ring later.

8. Be a Buddy ------------------- (establish) in 2011

9. We encouraged peole ---------------- (recycle) bottles, cans and paper.

10. My mother enjoys ---------------- (do) charitable work.

I. Fill in each blank with a suitable word

1. My friend loves ------------- dolls. She has a large doll colection.

2. Two people were severely physically ------------- in the crash.

3. My father carves eggshells as a --------------.

4. He keeps sneezing and coughing. I think he has a ----------------

5. walking is one of the best ways to stay in ----------------

6. The government should provide housing for -------------- people.

I. There is one mistake in each sentence. Underline and correct the mistake.

1. Sitting close to the laptop's screen hurt your eyes. ----------------------

2. You look so bad! How's wrong with you ? ------------------------

3. Eating lots of fast food can make you fat or obesity. ----------------------

4. Eating more fruit and vegetables to get vitamins, minerals, fiber. ----------------------------

5. Good nutrition is a important part of leading a healthy lifestyle. -----------------------

6. Watch more television; if not, your eyes will be tired. ---------------------

7. I've drunk three glasses of beer, but I've got a headache. --------------------