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改为同义句:Weshoulddosomehousework.It'snecessary.It'sussomehousework.改为否定句:Hehasalreadyfinishedhishomework.Hehishomework.

题目详情
改为同义句:
We should do some housework.It's necessary.
It's _________ __________ us _________ __________ some housework.
改为否定句:
He has already finished his homework.
He ______ _________ his homework _______.
▼优质解答
答案和解析
it's necessary for us to do some housework
he hasn't finished his homework yet.