Câu hỏi: It is very difficult for her to prevent him for smoking in her house.

A. very

B. for 

C. prevent 

D. for smoking

Câu 1: My pen has very few ink in it, so could you give me some

A. has 

B. few ink

C. could

D. some

Câu 2: Proteins are made up of folded irregularly chains, the links of which are amino acids.

A. made up of

B. folded irregularly

C. the links

D. which

Câu 3: The number of students attending universities to study economics have increased steadily in the last few years.

A. of students

B. attending

C. economics

D. have

Câu 4: Folklore consists of the beliefs, customs, traditions, and telling stories that people pass from generation to generation.

A. Folklore

B. the

C. telling stories

D. generation

Câu 5: It is recommended that people to take regular exercise.

A. recommended

B. people

C. to take

D. exercise

Câu 6: My teacher is very strict and he always makes us to finish all the exercises before leaving school.

A. is

B. strict

C. to finish

D. leaving school