31．-Can I smoke here?

　　　 -No．On no condition ______ in the museum．

　　　 A．is smoking permitted　　　 　　　　　　 B．smoking is permitted

　　　 C．was smoking permitted　　 　　　　　 D．smoking was permitted

30．It's a good habit to have your car brakes ______ before a long journey．

　　　 A．to check　 　　　 B．checked 　　　　 C．checking 　　　　 D．check

29．-The cleaning must have taken you quite a long time yesterday．

　　　 -Right．The rooms ______ for two months．

　　　 A．haven't been cleaned　 　　　　　　　 B．didn't clean

　　　 C．hadn't been cleaned　 　　　　　　　　 D．hadn't cleaned

28．Kids are often told to remain ______ they are and wait for their parents if they get lost．

　　　 A．what　 　　　　　　 B．where 　　　　　　　 C．how　 　　　　　　　 D．who

27．-What did you ______ while in college?

　　　 -English, politics and economics．

　　　 A．take up 　　　　　 B．think up 　　　　　 C．bring up　 　　　 D．make up

26．I called Nancy many times but couldn't get through．Someone ______ on the phone all the time!

　　　 A．has been talking　　 　　　　　　　　　　 B．was talking　　　　

　　　 C．has talked　　　　　 　　　　　　　　　　 D．talked

25．How convenient the public transportation is! There ______ be any difficulty traveling around．

　　　 A．mustn't　 　　　　 B．wouldn't　　　 　　　　　　　　　　　　　　　 C．shouldn't　 　　　 D．needn't

24．-I just heard you had an adventure in the desert．

　　　 -We lost our way and ______ made matters worse was that our jeep broke down．

　　　 A．how　　　　　 　　　　　　　　　　　　　　　 B．that　 　　　　　　　 C．it　 　　　　　　 D．what

23．______ is reported, a new town has been built on the ruins left by the big earthquake．

　　　 A．It　　 　　　　　　　 B．As　　 　　　　　　　　 C．Which　 　　　　　 D．This

22．His suggestion is that ______ action be taken to improve ______ situation．

　　　 A．/; the 　　　　　　　 B．an; the 　　　　　　 C．I; a．　　　　　　　　 D．the;a