单项选择题
Delegates are asked to check out by 10:30a.m. The delegates should leave their rooms（）
A. before half past ten. B. at ten thirty. C. earlier than half past eleven.
Mr. Smith called -- He's unavailable for the meeting to...
单项选择题Mr. Smith called -- He's unavailable for the meeting tomorrow.Mr. Smith will（）
A. be late for the meeting tomorrow. B. take part in the meeting tomorrow. C. not be at the meeting tomorrow.
Sales were good but distribution problems led to a slig...
单项选择题Sales were good but distribution problems led to a slight drop in profits.The company had problems with（）
A. producing enough goods. B. delivering enough goods. C. selling enough goods.
