20．-Excuse me, could you tell me the way to the British Museum?

-Sorry, I’m a stranger here.

-_______.

　　　 A．Thanks, anyway　　　 　　　　　　　　　　　 B．It doesn’t matter

　　　 C．Never mind　　　 　　　　　　　　　　　　　　　 D．No problem

19．A good teacher always leaves his students enough time to think and voice their opinions in class, ______ sometimes he may not complete his teaching task.

　　　 A．in case　　　　　　　　 B．even if　　　　　　　　 C．as long as　　　　　　 　　 D．as if

18．The mobile phone, together with computers, ______ an important role in our daily life.

A．are playing　　　　　 B．has played　　　　　 C．is playing　　　　　　　　 D．play

17．-Where ____ you ______ the book? I’ve been looking for it everywhere.

-I ______ it here, but it’s gone.

　　　 A．have left; have left　 　　　　　　　　　　　　　　 B．did leave; left　　

　　　 C．did leave; have left　　 　　　　　　　　　　　 D．have left; left

16．-I’m sorry for being late. I forgot to set my alarm clock and got up too late.

　 -There is no ______ for being late. Start your work right away.

　　　 A．doubt　　　　　　　　　 B．wonder　　　　　　　 C．use　　　　　　　　　　 D．excuse

15．-I feel really disappointed not to have got that job.

　 -Don’t worry, maybe something better will _______.

　　　 A．come along　　　　　 B．take on　　　　　　　　 C．go by　　　　　　　　　 D．fall down

14．Nobody can predict the stock market and you might end up ______ all your money.

　　　 A．losing　　　　　　　　　 B．lost　　　　　　　　　　 C．to lose　　　　　　　　 D．lose

13．______ I accept that he is not perfect, I do actually like the person.

　　 A．Before　　　　 　 B．Since　　　　 　 C．While　　 　　　　　 D．Unless

12．-Do you like Beijing?

　 -Yes. But I don’t like ______ in autumn when it is often windy and the air is full of dust.

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