These engines used to______(start) by hand.Now they are started by electricity..

游客2024-07-26 41

问题 These engines used to______(start) by hand.Now they are started by electricity..

选项

答案 be started

解析 engine与start之间是被动关系。

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Theseenginesusedto______(start)byhand.Nowtheyarestartedbyelectricity..