jim is helping his mum _____ their bedroom.A cleaning B to clean C cleans D with clean到底是A还是B

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jim is helping his mum _____ their bedroom.A cleaning B to clean C cleans D with clean到底是A还是B
jim is helping his mum _____ their bedroom.A cleaning B to clean C cleans D with clean
到底是A还是B

jim is helping his mum _____ their bedroom.A cleaning B to clean C cleans D with clean到底是A还是B
B
help sb to do
help sb do
help sb with sth

B to clean
help sb. (to) do sth.

A cleaning