问题

_____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

正确答案是：

同类题型

Nice to meet you. —________.

下列句子中，没有语病的一句是（）

stA H1/N1 flu will begin across Britain next week, _____a sharp increase in thedeath cases

ing to the UN, chemical weapons were used in an attack near the capital of Syria on August 21, over 1, 400 people.

Betty is in Jinan her parents.