单项选择题
A．at one time B．at once C．one time D．once
May I speak to your manager Mr. Williams at five o'cloc...
单项选择题May I speak to your manager Mr. Williams at five o'clockI'm sorry. Mr. Williams（）to a conference long before then.
A．will have gone B．mustn't follow C．couldn't have been following D．shouldn't have been following
We can't be delayed（）. We must hurry. A．after a moment ...
单项选择题We can't be delayed（）. We must hurry.
A．after a moment B．for a moment C．in a moment D．in the moment
I'm glad to say that he's already finished（）50% of the ...
单项选择题I'm glad to say that he's already finished（）50% of the book in these past three days.
A．no less than B．no more than C．not more than D．much less than
