______ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.（1分）<br>ATo wait<br>BHave waited<br>CHaving waited<br>DTo have waited

______ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.（1分）
ATo wait
BHave waited
CHaving waited
DTo have waited

出自：武汉科技大学英语

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