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

A. is selling

B. sold

C. are sold

D. is sold

Câu 1: Since the first space mission many communication satellites ..........................

A. was launched

B. are launched

C. have been launched

D. had been launch

Câu 2: It ............... Mexico.

A. is imported to

B. is imported from

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

A. washed

B. were washed

C. was washing

D. wash

Câu 6: Wine .................... grapes.

A. is made by

B. is made from

C. Either could be used here.