Câu hỏi: Could you tell me how can I get to the city library, please?

A. Could

B. me

C. how can I

D. the

Câu 1: The bones of the elderly are more prone to fractures than of young people.

A. the elderly 

B. more

C. to

D. of

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: If you take the train, it would be much more convenient.

A. if

B. the train

C. would be

D. much

Câu 4: A smile can be observed, described, and reliably identify, it can also be elicited and manipulated under experimental conditions.

A. identify

B. experimental

C. can also

D. A smile

Câu 5: 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 6: It is recommended that people to take regular exercise.

A. recommended

B. people

C. to take

D. exercise