Question

The professor paused as if ___________ his students to ask questions on the point he had just made

1. A.
   expecting
2. B.
   is expecting
3. C.
   expected
4. D.
   to have expected

Answer 1

A
考查时态。句意：这位教授暂停了一下，好像正盼望着他的学生回答他刚才提出的问题。结合语境可知从句中描写的是刚才发生的动作，故用过去进行时态，这句话省略了he was，选A。