23、— Would you like steak or chicken?

—____．I’m full now．

A．Both             B．None          C．Either          D．Neither

22、Scientists are trying to develop a soya-based fuel for cars, which ____one day replace petrol．

A．must         B．should          C．would          D．may 

21、Peter’s jacket looked just the same as Jack’s, but it cost twice ______．

A．as many          B．as much         C．so much           D．so many

20、I’m sure that your letter _______ immediate attention．They know you’re waiting for the reply．

A．will get           B．gets         C．has got        D．is getting

19、_________ flying is more expensive than land and sea travel, I went there by air to save time．

A．Even though            B．If        C．As        D．In case

18、We can never expect a bluer sky ________ we create a less polluted world．

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

17、—Would you please keep quiet, Sally? The weather forecast _______．

—Oh, I’m sorry I didn’t realize it．

A．is broadcast                                               B．is being broadcast

C．has been broadcast                                     D．had been broadcast

16、_________by many different kinds of dancing, Martha Graham developed her own personal dance style．

A．Influencing           B．Influenced            C．To Influence          D．Be influenced

15、It will be sad not to see you during the Christmas holiday ______families get together

A．before          B．when         C．that         D．since

14、It cost me a fortune，but I don’t regret ______ a year traveling around the world．

A．to spend         B．to be spending           C．spending           D．spent