用括号中所给词的适当形式填空.Linda often helps her classmate ________(clean)the classroom.His talk made all of us ________(laugh)in the end.

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用括号中所给词的适当形式填空.Linda often helps her classmate ________(clean)the classroom.His talk made all of us ________(laugh)in the end.

用括号中所给词的适当形式填空.Linda often helps her classmate ________(clean)the classroom.His talk made all of us ________(laugh)in the end.
用括号中所给词的适当形式填空.Linda often helps her classmate ________(clean)the classroom.
His talk made all of us ________(laugh)in the end.

用括号中所给词的适当形式填空.Linda often helps her classmate ________(clean)the classroom.His talk made all of us ________(laugh)in the end.
( to ) clean
help sb to do sth 固定用法‘帮助某人做某事,TO 可省
laugh
make sb do sth 固定用法“让某人做某事”

clean
laugh
都是省to的动词不定式,因为help sb (to) do sth, make后面宾补如果是不定式,必须省to

laugh
make sb do sth

clean,laughed