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初中英语选择题,要解释.At school our teacher do all they can____us with our lessons.A.help B.helping C.to help D.helped

题目详情
初中英语选择题,要解释.
At school our teacher do all they can____us with our lessons.
A.help B.helping C.to help D.helped
▼优质解答
答案和解析
C
.to help 是不定式做目的状语;help、.helping 、 .helped是谓语动词形式,不能做目的状语