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

游客2023-10-02 14

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.