The teacher looked at the student with a smile as if him to answer the question.A. expect

问题补充：

The teacher looked at the student with a smile as if him to answer the question.

A. expected

B. to expect

C. expecting

D. expect

答案：

A. expected

B. to expect

(答案→)C. expecting

D. expect

解析：考查非谓语动词。句意：老师微笑的看着学生们，好像在盼着他们回答这个问题。现在分词作状语表示主语正在进行的伴随性动作，结合语境可知选C。