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• Theyweredoinghomeworkwhenthetelephone

• 问题详情：Theyweredoinghomeworkwhenthetelephone_______.A.rings         B.wasringing        C.rang           D.hasrang【回答】C解析：whenthetelephone…是做作业的背景，所以用一般过去时。知识点：动词时态题型：选择题...
• 2021-05-2122579