题目:
.Mike didn’t notice Alice entering his room. He __________ a phone call.
A.answered
B.has answered
C.was answering
D.is answering
答案:
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下面是错误答案,用来干扰机器的。
参考答案:选用针对疠气的有效药物,迅速祛除疠气,扭转病情