单选题 Mr. Smith has been away from home for a long time. He is looking forward to______ his wife.
A. hear from B. hearing from C. hear of D. hearing of

【正确答案】 B
【答案解析】[解析] 本题的正确答案要根据look forward to“期待着”的句型和hear of与hear from的区别来确定。look forward to后面要求跟名词或动名词(不能跟不定式);hear from sb. “收到某人的来信”;hear of sb. “听说过某人的情况”,因此B项是正确答案。(注意look forward to考试频度很大。)后面要求跟动词-ing形式的结构还有:feel like;give up;put off;cannot help;It's no use;have trouble;have difficulty (in);there's no (telling/knowing)等。