Is necessary to complete the design before National Day?A. thisB. that C. it D. he

发布时间:2020-08-17 12:12:53

Is      necessary to plete the design before National Day?
A. this
B. that 
C. it 
D. he

网友回答

A. this
B. that 
(答案→)C. it 
D. he
解析: it作形式主语,代指后面的不定式。
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