What the boy make his friends happy.A. does didB. did didC. do doD. do does

发布时间：2020-08-17 14:43:54

What the boy      make his friends happy.
A. does did
B. did did
C. do do
D. do does

网友回答

A. does did
(答案→)B. did did
C. do do
D. do does
解析：第一个did做主语从句的谓语, 第二个did是主句谓语的强调形式。
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