Bl...

Câu hỏi: Blacken the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
The students________by Mrs. Monty. However, this week they________by Mr. Tanzer.

A.  have usually been taught / have been teaching

B.  usually teach / are teaching

C.  are usually taught / are being taught

D.  were usually teaching / are teaching