单项选择题
A．in advance B．before C．by D．ahead of
The janitor's long service with the company was（）a pres...
单项选择题The janitor's long service with the company was（）a present.
A．confirmed by B．recorded with C．appreciated by D．acknowledged with
The trouble is that not many students really know how t...
单项选择题The trouble is that not many students really know how to make use of their time to its best（）
A．benefit B．advantage C．value D．profit
