Question

He ______ at the meeting, but his heart attack prevented him.

1. A.
   will speak
2. B.
   is going to speak
3. C.
   had to speak
4. D.
   was going to speak

Answer 1

D
解析：
由题意“他本来打算在会上发言，但……”可知应该用过去将来时，只有D是过去将来时的形式。