--I hear this kind of CD-ROM is very popular.--Let’s buy one before it ____________.
—Did Jim offer you any advice? —No, he offered _______. After listening to my problem, he said _______.
—May I speak to Mr Wang, please? —Sorry, he is not in. Can I take a (an) _______ for you?
—Tom looks very sad. What’s wrong _______ him? —An accident happened _______ his father this morning.
The boy felt very _______ and fell _______ as soon as he lay on the bed.
This is _______ book I bought yesterday. Isn’t it ________ interesting one?