1.She is waiting for her friend outsides.

Her friend is watted outsides by her

2.they will build a new super market here.

An new supermarket would be built there by them

3.she drank a lot of coffee last night.

A lot off coffee have drank the night before by her

4.a loud noise woke her up at midnight.

she was woke up at midnight by a loud noise

5.the police stopped the man in the motorbike .

The man was stopped in the motobike by the police

6. the tay group enjoys the five-colour sticky rice.

The five-colour sticky rice is enjoyed by the tay group

7. some women are growing rice in the field

rice in the field are grown by some women

8. we can complete the essay now

The essay could be complete them by we

9. he must clean the house before going out.

The house must cleaned before going out by him

10. children may eat these small beads because they look like candy

These small beads might be eaten by children because they look like candy

Mg=24đvC

a,C=12đvC=> Mg>C

b, S=32đvC=> S> Mg

c, Al=27đvC=>Al>Mg

X=2N

NTK N=14đvC => X=28 đvC= Si(Silic)

1. There are some trees in this area, but now there aren't any.

- There used to some trees in this area.

2. Although the film was boring. Hoa didn't leave the cinema until it ended.

- In spite of the film was boring but Hoa didn't leave the cinema until it ended.

3. My hair now is much longer than that in the past.

- In the past my hair used to short

4. Mary doesn't work in this company any more.

- Mary used to work this company any more

5. Although he overslept, Mike wasn't late for work.

- In spite of he overslept, Mike wasn't late for work.

6. Is it possible to travel to Alaska by plane?

- Can I travel to Alaska by plane?

7. They found this story execting. ( about )

They talk about this execting story

8. I am interested in your plan.

- I found your plan is interested.

9. My father no longer smokes a lot.

- My father used to smokes a lot.

10. Road users should obey traffic rules strictly. ( obeyed )

Traffic rules should be obeyed trictly( by road users)

gọi G là giao điểm của BD và CE

ta có

BG=2/3 BD suy ra BG=2/3 . 9= 6 cm 

CG=2/3 CE suy ra CG=2/3 . 12= 8 cm

xét tam giác CGB vuông tại G ta có 

CB^2= CG^2 + BG^2 =8^2 + 6^2 =64 + 36

CB^2=100 suy ra CB =10 cm

Choose the word that has main stress placed differently from the others

A.  activity

B. attentiveness

C. explanation

D. ability

moi thung co : 98624 : 2 = 49312 ( qua )

33214 x 3 = 99642

2345 x 4 = 9380

tik nha

2000 < 5 x n - 1 < 2013

Ta thấy: 5 x n - 1 = (...0) - 1 = (...9) hoặc 5 x n - 1 = (...5) - 1 = (...4)

Do đó tận cùng của 5 x n - 1 phải là 4 hoặc 9

Mà theo đề: 2000 < 5 x n - 1 < 2013

=> 5 x n - 1 = 2004 hoặc 5 x n - 1 = 2009

=> n = 401 hoặc n = 402.