20．-Would you mind if I take the seat?　

-_______.

A．Yes, sit down, please 　　　　　　　　　　　　　 B．No, not at all　

C．Surely, never mind　　　　　　　 　　　　　　　　 D．No, you can’t take it

19．If you go for a long ride in a friend’s car, it’s the ______ to offer to pay some of the ______.

A．habit; expenses　　 B．custom; expense C．custom; expenses D．habit; expense

18．I don’t believe that Tom will give me a hand in time of trouble, _______?

A．do I　　　　　　　　　　 B．don’t I 　　　　　　　 C．will he　　　　　　　　 D．won’t he

17．After I waited for a very long time, the manager made a phone call to me yesterday ______ me a good job at last.

A．giving　 　　　　　　　 B．providing　　　 C．supplying　 　　　　 D．offering

16．These people ______ in the city but now they ______ in the countryside and like it very much.

A．were used to live; used to live 　　　　 B．used to live; are used to living

C．were used to living; are used to live 　　　　　　　　　　　　　　　　　 D．used to living; used to live

15．I ______ see Sarah ______ her poor mother. They two look so much alike.

A．will; thinking about　　　　　　　 　　　　　　　　 B．never; without thinking of

C．always; and remind　　　　　　　 　　　　　　　 D．hardly; and remember