问题
选择题
He ______ at the meeting, but his heart attack prevented him.
A．will speak
B．is going to speak
C．had to speak
D．was going to speak
答案
答案：D
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。
搜题请搜索小程序“爱下问搜题”