Câu hỏi: Concert tickets .................... at the box office.

A. is selling

B. sold

C. are sold

D. is sold

Câu 1: The day before yesterday we .............................a very bad storm.

A. had had

B. were having

C. had

D. have had

Câu 2: Their house .............. last week.

A. was bought

B. has been bought

Câu 3: She complains that she ................................ headaches.

A. has frequently had

B. has been frequently

C. has frequently

D. had frequently been had

Câu 4: She ................ promoted again.

A. has been

B. is

Câu 5: It ............... Mexico.

A. is imported to

B. is imported from

Câu 6: In a few months, the firm ....................... its production.

A. is increased

B. will be increasing

C. will be increased

D. has increasing