He was thinking about the problem when an apple fell off the tree, him right on the head.

发布时间：2020-08-16 16:38:34

He was thinking about the problem when an apple fell off the tree,      him right on the head.
A. hit
B. having hit
C. hitting
D. and hitting

网友回答

A. hit
B. having hit
(答案→)C. hitting
D. and hitting
解析：现在分词做状语“苹果”与“撞击”为主谓关系。他正在想问题这时一个苹果落下来正好打中他的头部。选C
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