Câu hỏi: In bacteria and other organisms, ............

A. it is the DNA that provides the genetic information

B. which is the DNA that provides the genes

C. the DNA providing the genetic information

D. the DNA that provides the genetic information 

Câu 1: The earlier she leaves,...........

A. the sooner she will arrive

B. the soonest she will arrive

C. she will arrive sooner

D. she will soon arrive 

Câu 2: ............., he wouldn’t have missed the train

A. If he listened to me

B. Unless she had listened to me

C. If he had listened to me

D. If he didn’t listen

Câu 3: It takes him thirty minutes to go ...........every day. 

A. working by a bus 

B. working on bus

C. to work with bus

D. to work by bus

Câu 4: When the film finishes, ............

A. will we have to leave

B. we have left 

C. we had to leave

D. we will have to leave 

Câu 5: Having been delayed by heavy traffic,           

A. it was difficult for her to arrive on time

B. her being late was intolerable

C. it was impossible for her to arrive on time

D. she was unable to arrive on time

Câu 6: We’ll be late for the meeting...........

A. unless we hurry up

B. if we are in a hurry 

C. unless we will hurry up

D. when we are in a hurry