Liu Mei often helps her mother _____ housework.

A. does
B. do
C. doing
D. to doing
B
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科目：初中英語(yǔ) 來(lái)源：期末題 題型：單選題

Liu Mei often helps her mother _____ housework.
[     ]
A. does
B. do
C. doing
D. to doing

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科目：初中英語(yǔ) 來(lái)源： 題型：

 Liu Mei often helps her mother ________ housework.

　　A. does B. do C.doing D. to doing

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