19. -_____ Mr Smith ____ this week?

　- No. He is on holiday.

　A. Has; worked　 B. Does; work

　C. Did; work　　 D. Is; working

　选D。根据答句He is on holiday.说明动作处于正在进行状态，而不是完成性的、过去发生的或经常性的动作，故排除选项A、B、C，选用现在进行时。

18. Some of the students have already learned enough English to ____ a conversation with a native English speaker.

　A. hold on　　　 B. keep on　　　 C. go on　　　　 D. carry on

　选D。选项A、B、C三个动词短语都表示"继续"之意，与题干中名词a conversation with a native English speaker构成短语，不符句意。

17. -Yangyang carried off the first winter Olympic _____ medal for China.

　-Great! What ____ she won for our motherland!

　A. golden; honour　　　　　 B. gold; honor

　C. golden; honors　　　　　 D. gold; honors

　选B。根据句意可以知道，第一空"金牌"意思为"含金之物"，应用gold作定语，而golden 为比喻性形容词，意思为"金色的"。例如golden rice"金黄色的稻子"；第二空 honor 在此意思为"荣誉，光荣"，是不可数名词。

16. The US/UK war against Iraq and the suffering _____ caused have become a big concern all over the world.

　A. what　　　 B. which　　　 C. it　　　 D. ×

　选C。 it (= the US/UK war) caused是定语从句修饰the suffering。

15. It is partly _____ the summer day is longer that everything has a larger time to warm up.

　A. for　 B. that　　 C. the reason　　 D. because

　选D。强调句型中的原因状语从句只能用because引导。

14. - Look! Here _____.

　- Oh, yes, here _____.

　A. the bus comes…it comes

　B. comes the bus…comes it

　C. does the bus come…does it come

　D. comes the bus…it comes

　选D。主语是名词时全部倒装；主语是代词时主谓不颠倒。

13. All substances, _____ solid, liquids or gases, are made up of entirely atoms.

　A. whether they　　　　 B. whether

　C. whether are they　　 D. whether are

　选B。本题考查省略用法。 whether (they are) solid, liquids or gases。

12. ----_____ you or he the teacher of English?

　----Neither my sister nor my mother　　　 present at the meeting.

　A. Are; is　　 B. Is; are　　 C. Are; are　　 D. Is; is

　选A。第一空根据疑问句就近一致的原则选are;第二空根据neither…nor…的意义一致选单数。

11. ____ you may be right , I can’t agree completely.

　A. While　　　 B. As　　　 C. If　　　　 D. Since

　选A。while用作从属连词时,可表示“尽管、虽然”,引导一个让步状语从句。

10. ____ that they are inexperienced, they have done a good job.

　A. Giving　 B. To give　 C. Given　 D. If given

　选C。.given此处意为“考虑到”,在句中可用作介词或连词。