Câu hỏi: By the mid-nineteenth century, land was such expensive in large cities that architects began to conserve space by designing skyscrapers.

A. By the mid-nineteenth century

B. such expensive

C. conserve

D. by designing

Câu 1: By the time the police come the robber had run away.

A. By the time

B. the

C. come

D. had run

Câu 2: He said that he has done his homework since 7 o'clock.

A. said

B. has done

C. homework

D. since

Câu 3: The threat of being dismissed do not worry me any more because I have started my own business.

A. The

B. being dismissed

C. do not worry

D. my own business

Câu 4: Everyday in summer, but especially at the weekends, all kinds of vehicles bring crowds of people to enjoy the various attraction.

A. especially at

B. bring

C. crowds of people

D. various attraction

Câu 5: Because they had spent too many time considering the new contract, the students lost the chance to lease the apartment.

A. because

B. too many

C. considering

D. to lease

Câu 6: We are going to visit our grandparents when we will finish our final exams.

A. are going to

B. our

C. when

D. will