题目内容
(请给出正确答案)
[主观题]
Delegates are asked to check out by 10:30 a.m.The delegates should leave their rooms______
Delegates are asked to check out by 10:30 a.m. The delegates should leave their rooms ______ .
A.before half past ten.
B.at ten thirty.
C.earlier than half past eleven.
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