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
网友回答
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。