I think ______ people drive, ______ air pollution there will be.—That’s true. I hope the air will be fresher soon.

— What _______ if you _______ on the Titanic? 　　 — What a question! 　　[ ]

She may have been caught in the heavy traffic, ____ she won’t arrive here by five o’clock.

It’s very nice ________ pictures for me.

The old lady is_________ in a lonely house,but she doesn’t feel__________.