Look at that tall building!—It is _______tallest building in the city.

I hope all the precautions against air pollution, _____ suggested by the localgovernment, will be seriously considered here.

Excuse me, does Mr. Zhang’s son live here? —He________ be here, but he has moved?

While he_____ on the phone, a man walked into his room.

. –Excuse me, sir ______ –I’d like a beer and beef steak.