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用所给单词的正确形填空

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用所给单词的正确形填空
1 Sam is good at ___(swim)
2 When Lily came,I____(play) the pano.
3 Thereweren't a ot of ___(factory) here 20 yeas ago.
4 My robot__(clean)the house in the future.
5 There isn't ___(some) butter in the fridge.
6 I hugged Tim when I___(meet) him at the Metro station.
7 When I was young,I___(can) play the violin
1,swimming
be good at doing sth 擅长zuomous
2,was playing
用过去进行时
当莉莉进来的时候,我正在弹钢琴.
3,factories
factory 是可数名词,跟在 a lot of 后面,用复数.
4,will clean
in the future 在将来,动词用将来时.
5,any
否定句中 some 变成 any
6,met
主句的动词 hugged 是过去式,从句也用过去式与之对应.
meet 是短暂性动词,不能用进行时.
7,could
我年轻时会拉小提琴,是过去的事,动词用过去式.