in the queue for half an hour.Tom suddenly realized that he had left his wallet at home． Havin——青夏教育精英家教网——

摘要： in the queue for half an hour.Tom suddenly realized that he had left his wallet at home． Having waited

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________in the queue for half an hour，Tom suddenly realized that he had left his wallet at home.

A．To wait
B．Have waited
C．Having waited
D．To have waited

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________in the queue for half an hour，Tom suddenly realized that he had left his wallet at home．

[　　]

B．Have waited

C．Having waited

D．To have waited

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