Tìm lỗi sai và sửa

1. Although (A) the heavy rain (B), they continued (C) their work (D)

2. Nguyen Du, that (A) wrote Kieu Story, was (B) one of the greatest (C) Vietnamese poets (D)

3. It was (A) not until (B) 1995 that (C) the cinema really become (D) an industry

4. "Why (A) are you saving (B) money for?" - "To buy (C) a computer (D) "

Tìm lỗi sai và sửa

1. To live healthily (A) we should do (B) exercises regularly (C) and stop smoke (D)

2. Last Sunday I stayed (A) at (B) home to make (C) my homework (D)

3. People (A) are asked not cut (B) a lot of trees (C) for firewood (D)

4. This is (A) the first (B) tim I eat (C ) honey with (D) spaghetti

5. Music (A) is clear (B) different from (C) language (D)

6. He (A) wouldn't have begun to (B) learn Russian if he knows (C) the difficulties (D)

7. What (A) do you think of cartoon films (B) ? I find (C) them interested (D)

Cho các phát biểu sau

(1) Clo là chất oxi hóa khi tác dụng với dung dịch NaOH

(2) Có thể phân biệt dung dịch CaCl₂ và dung dịch AgNO₃ bằng dung dịch AgNO₃

(3) Trong tự nhiên, clo tồn tại cả ở dạng đơn chất và hợp chất

(4) Clo có số oxi hóa -1 chỉ trong hợp chất với hydro

Số phát biểu đúng là bao nhiêu

Rút gọn các biểu thức sau

a) sin⁴x+cos⁴x

b) sin⁴x-cos⁴x

Tóm tắt diễn biến của quá trình nuôi cấy không liên tục

Nếu \(cot1,25.tan\left(4\text{ }Π+1,25\right)-sin\left(x+\frac{Π}{2}\right).cos\left(6Π-x\right)=0\) thì tanx bằng

Biết rằng \(sin\left(x-\frac{\text{Π }}{2}\right)+sin\frac{13\text{Π }}{2}=sin\left(x+\frac{\text{Π }}{2}\right)\)

Giá trị của biểu thức P=\(\left[tan\frac{17\text{Π }}{4}+tan\left(\frac{7\text{Π }}{2}-x\right)\right]^2+\left[cot\frac{13\text{Π }}{4}+cot\left(7\text{Π }-2\right)\right]^2\)

Writing

1. Peter met some of his friends in a restaurant last night (Make a Wh-question for the underlined words)

2. I can't take much exercise because I don't have enough free time

-> If...................

3. The officer wasn't very friendly. We spoke to him yesterday. (Rewrite with a Relative Pronoun)

4. They were using the tennis court at that time (Change into Passive Voice)

5. It was noisy, but my sister kept on studying ( Rewrite the sentence with ''Although'')

Tìm lỗi sai và sửa

1. She likes (A) to watch (B) that film again (C) because it is very interested (D)

2. Louisa May Alcott, whom (A) is best known for her books (B) for children, served (C) as a nurse during (D) the Civil War

3. San Francisco (A), who (B) is a beautiful city, has (C) a population of (D) six million

4. I'm (A) always surprising (B) by (C) John's strange (D) travel stories

5. People (A) can use (B) music for (C) express their emotions (D)