作业帮(在擦浴室）The children_______ their mother__________the housework last Sunday.
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(在擦浴室）The children_______ their mother__________the housework last Sunday.
(在擦浴室）The children_______ their mother__________the housework last Sunday.
(在擦浴室）The children_______ their mother__________the housework last Sunday.
helped,do
helped
doing