23、Travelers         that they should bring their ID cards with them.

A．have reminded                                        B．are reminded

C．were reminding                                        D．had been reminded

22、Whether ways will be found to stop pollution or not is just          worries the public.

A．why           B．which          C．that            D．what

21、—Alice, you look puzzled．Have you understood it?

—Yes, I         another problem just now.

A．have thought of                                                                      B．am thinking of

C．had thought of                                      D．was thinking of

20、—Are you free after school?

—Sorry: I’ve planned to treat a friend of mine to dinner        for his help.

A．in terms              B．in honor          C．in turn          D．in return

19、All the          indicate that he has been deeply involved in the crime.

A．evidence         B．fact           C．factors         D．cause

18、His speech at the meeting was really wonderful, and it could never be any         .

A．best          B．better               C．worse            D．worst

17、The world is changing fast．I strongly believe that one will easily fall behind         he keeps on learning.

A．unless             B．if         C．when           D．as

16、—May I tell this to my close friend?

—No, you       ．Never let anybody else know about it.

A．needn’t       B．shouldn’t          C．mustn’t       D．can’t

15、Don’t leave the water       while you brush your teeth.

A．run         B．running           C．being run         D．to run

14、It was the long March Rocket 2F, as reported,       sent Shenzhou VI spaceship into space.

A．which          B．what         C．that        D．as