B
只有当从句中是过去时,这时主句的动作发生在从句之前才能够用过去完成时!
He _____ without having breakfast.a.had used to go to school b.has used to go to school
He _____ without having breakfast.a.had used to go to school b.has used to go to school
英语人气:924 ℃时间:2020-04-03 04:08:55
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