Saying always has less difficulty than .A. doneB. doingC. to doD. having done

发布时间：2020-08-17 14:12:41

Saying always has less difficulty than     .
A. done
B. doing
C. to do
D. having done

网友回答

A. done
(答案→)B. doing
C. to do
D. having done
解析：doing和saying相对照，都是动名词。
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