Rose told her father that she wanted a new bike.

Is this hotel _____ you once stayed at? [ ]

Who’s the man over there?Is it Mr Black?—-It _____be him.He’s much taller.

Do you know the person with __________ he always chatted online?—Yes, one of his QQ friends.

What will the weather be like tomorrow? –It____ be rainy, cloudy or sunny. Who knows?