题目内容
6. —I saw Mr Smith in the office at ten yesterday morning.
—That's impossible. He an English party with us then.
A. has B. was having
C. had D. has had
6. B考査时态。表示过去某一时刻正在做 某事,用过去进行时。
at ten yesterday morning过去的时间点,故选 B.
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