1.jack is taller and stronger than his sister(同义句）jack's sister is _____and____than jack.
还有：
1.he dose his homework after school(否定句）
he______ _______ his homework after school.
2.i'll buy a new kite with my good friend tomorrow.(改为一般过去时）
i_____ a new kite with my friend yesterday_____（昨天下午)
3.they visited beijing by train.(画线提问）
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4.i had fun at your birthday party last night?(一般疑问句）
_______ you ________ fun at my birthday party last night?