Câu hỏi: 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 1: 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 2: Recent evidence makes it possible for the investigators to conclude that .................

A. some paintings by Rembrandt were faked 

B. some paintings by Rembrandt must be faked 

C. Rembrandt was attributed to some paintings 

D. some paintings by Rembrandt to be faked

Câu 3: Geometry is a branch of mathematics .................the properties of lines, curves, shapes, and surfaces.

A. it is concerned with

B. which concern 

C. concern with 

D. that is concerned with

Câu 4: .............., we couldn’t have continued with the project. 

A. Unless we had your contribution 

B. Provided your contribution wouldn’t come

C. Even if you didn’t like to contribute

D. If you hadn’t contributed positivel

Câu 5: I wish George had come to Italy with us. 

A. I am pleased that George came to Italy with us. 

B. I am sorry that George isn't going to Italy with us. 

C. I hope that George will go to Italy with us.

D. I am sorry that George didn't come to Italy with us.

Câu 6: ............., 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