Câu hỏi: Having finished his tem paper before the deadline, it was delivered to professor before the class.

A. having finished

B. before

C. it was delivered

D. before

Câu 1: Although most species of small birds gather in groups at feeders provided by bird-watchers, the bright red cardinals usually appears alone or with its mate.

A. at

B. cardinals

C. or

D. its

Câu 2: If you take the train, it would be much more convenient.

A. if

B. the train

C. would be

D. much

Câu 3: Each of the members of the group were made to write a report every week.

A. were

B. members

C. to write

D. week

Câu 4: More than ten students have failed the exam, that surprised the class teacher.

A. more than

B. have failed

C. that

D. the

Câu 5: 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 6: Some of his favourite subjects at school are Maths, English and Geographical.

A. some

B. subjects

C. are

D. Geographical