单选题 Delegates are asked to check out by 10:30

A、 m.
The delegates should leave their roomsA. before half past ten.B. at ten thirty.C. earlier than half past eleven.

【正确答案】 A

【答案解析】check out“结账离开(旅馆)”。原句译为：“代表们要在上午10：30前结账离开”，故选A。