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

A. By the time

B. the

C. come

D. had run

Câu 1: Air pollution, together with littering, are causing many problems in our large, industrial cities today.

A. with

B. are

C. many

D. in our large

Câu 2: 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 3: 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 4: We are going to visit our grandparents when we will finish our final exams.

A. are going to

B. our

C. when

D. will

Câu 5: Mother’s Day is the day when children show their love on their mother on.

A. Mother’s Day

B. the day

C. when

D. on

Câu 6: She has disappeared three days ago, and they are still looking for her now.

A. has disappeared

B. and

C. are still

D. for her