Câu hỏi: I'd have bought Sam's car if I'd known he was selling it. 

A. I knew Sam wanted to sell his car.

B. I didn't buy Sam's car because I didn't know he was selling it.

C. I bought the car without knowing it was Sam's.

D. I'll buy the car as soon as Sam decides to sell it.

Câu 1: Your hair badly needs…………, Tom! 

A. cut

B. cutting 

C. to cut

D. be cut

Câu 2: I plan to come back to Korean, ………..we had a chance to visit ten years ago. 

A. which

B. where

C. that

D. in which

Câu 3: Twenty five dollars…..too much to pay for that shirt. 

A. have

B. is

C. sound

D. seem 

Câu 4: Our opinions on the subject are identical. 

A. There's some difference in our opinions on the subject.

B. We differ in opinions on the subject.

C. We have the same opinions on the subject.

D. We look like each other.

Câu 5: By next Friday, Sam……….five speeches. 

A. gives 

B. will give

C. will have given

D. has given

Câu 6: He survived the operation thanks to skilful surgery.

A. He survived because he was a skilful surgeon. 

B. Without skilful surgery, he would have died.

C. Because skilful surgery, he survived the operation

D. He died after the operation.