问题补充:
He is looking forward his father.
A. of receiving
B. of hearing from
C. to hear from
D. to hearing from
答案:
A. of receiving
B. of hearing from
C. to hear from
(答案→)D. to hearing from
解析:考查动名词做宾语:句意:他渴望收到爸爸的来信。look forward to doing盼望做…,to是介词,后面接动名词做宾语,因为收到某人来信是hear from sb,选D。