题目内容
【题目】His sister usually helps him________his homework.
A.doing
B.do
C.does
D.to doing
【答案】B
【解析】help sb(to)do sth帮助某人做某事。
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题目内容
【题目】His sister usually helps him________his homework.
A.doing
B.do
C.does
D.to doing
【答案】B
【解析】help sb(to)do sth帮助某人做某事。