Câu hỏi: The developing of the submarine was hindered by the lack of a power source that could propel an underwater vessel.

A. developing

B. the

C. a power

D. could propel

Câu 1: Women nowadays have more free to participate in social activities.

A. nowadays

B. more

C. free

D. social

Câu 2: The big problem was that we really did not understand what was happened

A. problem

B. that

C. did not

D. was happened

Câu 3: Not one in one hundred children exposed to the disease are likely to develop symptoms of it.

A. not one

B. are

C. symptoms

D. it

Câu 4: By the turn of the century, most of the inventions that were to bring in all the comforts of modern living has already been thought of.

A. By the turn of

B. that

C. were to

D. has already been

Câu 5: On the wedding day, the groom's family and relatives go to the bride’s house bring gifts wrapped in red papers.

A. On

B. groom’s

C. go

D. bring

Câu 6: The guide told the tourists that it was a good restaurant specializing in seafood just round the corner from the museum.

A. The

B. it was a

C. specializing

D. just round