There are a few books on the shelf. But only one of them is________.
What a smart and hard-working boy he is!—Right. ________ a possibility that he will win the first place in the competition.
His father looks _________ and he is looking ________ at his son.
What _____ are you doing ? —I’m looking for my book.[ ]
There ______ a talk show on CCTV-4 at nine this evening.