Don’t call him at this time tomorrow because he a meeting with his teachers.A. is having

问题补充：

Don’t call him at this time tomorrow, because he a meeting with his teachers.

A. is having

B. is going to have

C. will be having

D. has been having

答案：

A. is having

B. is going to have

(答案→)C. will be having

D. has been having

解析：句义：不要在明天的这个时候打电话给他，因为那时他正在和他的老师们见面。根据句义说明本句考察的将来进行时，表示在将来的某个时间点上正在发生的事情。故C正确。