Câu hỏi: Since the first space mission many communication satellites ..........................

A. was launched

B. are launched

C. have been launched

D. had been launch

Câu 1: She complains that she ................................ headaches.

A. has frequently had

B. has been frequently

C. has frequently

D. had frequently been had

Câu 2: In a few months, the firm ....................... its production.

A. is increased

B. will be increasing

C. will be increased

D. has increasing

Câu 3: Concert tickets .................... at the box office.

A. is selling

B. sold

C. are sold

D. is sold

Câu 4: By the time the applicant makes up his mind, the offer .......................

A. will cancel

B. will have been cancelled

C. will be cancelling

D. will have been cancel

Câu 5: The new bridge ........................ before the end of next month.

A. will be completed

B. will complete

C. is completed

D. completes

Câu 6: We .......................... all the windows last weekend.

A. washed

B. were washed

C. was washing

D. wash