Henry can’t attend the party at Tom’s house at present because he is preparing the speec

问题补充：

Henry can’t attend the party at Tom’s house at present because he is preparing the speech at the party at Marie’s house tomorrow.

A. held; being held

B. to be held; to be held

C. to be held; held

D. being held; to be held

答案：

A. held; being held

B. to be held; to be held

C. to be held; held

(答案→)D. being held; to be held

解析：由at present可知第一空应用being held（表示正在被进行的动作）；由tomorrow可知第二空应用to be held（表示即将被进行的动作）。