A
必须分辨清楚.其实前三个字最关键,就是must have been,必须在此用.我也解释不清楚,不过这没错呀!
You ______ when you heard the news.
You ______ when you heard the news.
A、 must have been very excited B、 must be very excited C、 can be very excited D、will have been very excited
A、 must have been very excited B、 must be very excited C、 can be very excited D、will have been very excited
英语人气：165 ℃时间：2020-01-28 16:57:33
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