问题补充:
It was the presidents speech that the secretary spent the whole morning at home.
A. to prepare
B. preparing
C. prepared
D. be prepared
答案:
A. to prepare
(答案→)B. preparing
C. prepared
D. be prepared
解析:本题考查非谓语动词。去掉It was…that后剩下的部分为 the presidents speech the secretary spent the whole morning at home,调整结构后是the secretary spent the whole morning at home the presidents speech。结合选项可知句意是:秘书花了整个早上在家为总统准备演讲。由此判断考查的是spend time (in)doing sth句型。