问题
选择题
What a pity! I hear they _______ the tickets for the concert.[ ]
A. have sold out
B. are selling out
C. sold out
D. had sold out
答案
答案：A
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What a pity! I hear they _______ the tickets for the concert.[ ]
A. have sold out
B. are selling out
C. sold out
D. had sold out
答案：A