题目内容
I was deep in thought, so I didn't notice _____.
A. him to come in B. him come in C. he come in D. him coming in
D
解析:
notice sb. doing更强调当时看见某人正在进行的动作。
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题目内容
I was deep in thought, so I didn't notice _____.
A. him to come in B. him come in C. he come in D. him coming in
D
notice sb. doing更强调当时看见某人正在进行的动作。