问题补充：
--- Hello, can I speak to Mr. Green, please?
--- I’m afraid not. He a meeting now.
A. will have
B. is having
C. had
D. was having
答案：
A. will have
(答案→)B. is having
C. had
D. was having
解析：句意：你好，能找格林先生接电话吗？——恐怕不能。他现在正在开会。根据时间状语及语境可知下文描述的是正在进行的动作，故用现在进行时态。选B。
