相关smotheristoobusy的文学知识

问题详情：Lily’smotheristoobusy_______housework_________herwithherhomework.A.todo;helping   B.doing;helping   C.todo;tohelp   D.doing;tohelp【回答】D【解析】句意：莉莉的母亲太忙于做家务而无法帮...