问题
选择题
Mary went to the booking-office at lunch time, but all the tickets _____ out. [ ]
A. would sell
B. was selling
C. had sold
D. have sold
答案
答案：C
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Mary went to the booking-office at lunch time, but all the tickets _____ out. [ ]
A. would sell
B. was selling
C. had sold
D. have sold
答案：C