问题
选择题
—Did you see Tom at the party ?
—No, he _____ by the time I got there . [ ]
A. left
B. was leaving
C. had left
D. has left
答案
答案：C
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—Did you see Tom at the party ?
—No, he _____ by the time I got there . [ ]
A. left
B. was leaving
C. had left
D. has left
答案：C