Câu hỏi: 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 1: 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

Câu 2: 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 3: His health gets good and better because he does gymnastics regularly.

A. good

B. because

C. does

D. regularly

Câu 4: The chemistry instructor explained the experiment in such of a way that it was easily understood.

A. in

B. such of a way that

C. was

D. easily understood

Câu 5: 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 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