[ ]Amy was cleaning her room ,her friends came in.Awhen Bas soon as Cwhile

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[]Amywascleaningherroom,herfriendscamein.AwhenBassoonasCwhile[]Amywascleaningherroom,herfriendscamei

[ ]Amy was cleaning her room ,her friends came in.Awhen Bas soon as Cwhile
[ ]Amy was cleaning her room ,her friends came in.Awhen Bas soon as Cwhile

[ ]Amy was cleaning her room ,her friends came in.Awhen Bas soon as Cwhile
A 或 C 都可以吧
cleaning 为延续性动词.
从句动作和主句动作同时发生,且从句动作为延续性动词时,when,while,as都可使用.
①When /While /As we were dancing,a stranger came in.(dance为延续性动词)当我们跳舞时,一位陌生人走了进来.