27、________ from him so far, she felt a little worried.

A．Having not heard                                        B．Not having heard

C．Not hearing                                                D．Not to hear

25、— Have you considered going to tonight’s concert？

— It ___ be easy to get a ticket, so I’ll just forget it.

A．must      B．can’t               C．mustn’t    D．can

24、— It is said that your niece is very lovely.

— Not _____. She is ____ than lovely.

A．exact; clever    B．exactly; more clever   C．exactly; cleverer    D．exact; more clever

23、It was ____ he wanted to help support the family ___ he dropped out of school.

A．because; that                                        B．for; so        C．since; why              D．as; therefore

22、A crazy idea ____ the boy as he was watching TV.

A．beat   B．formed     C．occurred          D．struck

21、While peace-keeping is ___ UN’s main duty, it also has programmes for ____ education, better health and business in more than 170 countries.

A．the; an      B．不填; the  C．the; 不填        D．不填; an

20、— Oh! What great progress you’ve made!

— ______.

A．It’s my pleasure

B．That’s all right. Keep it up

C．Don’t mention it. It’s far from enough  

D．Thank you. But I still have a long way to go

19、Carmen Ferreira ____ up hope of finding her pet parrot, Raquel, who ____ from the back garden of her house two years ago.

A．has given; disappeared                            B．had given; had disappeared   

C．had given; was disappeared                       D．has given; was disappearing

18、— ____ a second time, will the man have one more try?

— I’m sure he will.

A．Turn down                 B．If turned down     C．To turn down          D．If turning down