How long has Mr. White __________ Joan—I’m not sure. Maybe they __________ five years ago.

Whose pencil box is this—It _____ be Tom’s. It has his name on it.

Will you get there by _____ train?- No, I’ll take _ taxi.

It is fine today！How about_______ out for a walk

It’s reported that scientists have________ an effective way to deal with H1N1.–Really That’s great!