17．We’ll stay here for_________.

　 A. other ten days　　 B. another ten days

　 C. another ten day　　 D. ten another days

答：B。“再用十天时间”可以说成another ten days或ten more days．

16. I’ve already covered ___________ pages of the book.

　 A. he first twenty　　 B. a twenty first

　 C. the twenty first　　 D. a flrst twenty

答；A．头二十页the first twenty pages，后二十页the last twenty pages，头几天the first few days。

15. The working women in the city got paid_________.

　A. by hours　　　 B. by an hour　

　C. by hour　　　 D. by the hour

答：D．表示按小时、天、月、打等单位的词应这样表示：by the hour / day / month / dozen; 表示按长度、重量应这样表示：by length / weight.

14. He’s been here for_______.

A. one and a half hours　

　B. one and half an hour

C. one and half hours　 D. one and a half hour

答：A。“一个半小时”可以说成 an hour and a half或 one and a half hours,

13. He will be back in_________.

A. a or two days　　　　 B. one or two days

C. one day and two　　　 D. one and two day

答：B。“一两天”可以说成 one or two days 或 a day or two。

12. She waters the flower

A. each three days　　　 B.　 every third days

C.　 every three days　　　 D.　 each other day

答：C。每几天，不用each来表示，应说every few days；每三天every three days 或every three days; 每隔一天every other day。

11. The children often go to school_____.

　 A. by two and three　　 B. by two or three

　 C. by twos and threes　　 D. by twos or threes

答：C。 bytwosand threes 三三两两地

10. Mr Smith_________ me to buy several _________ eggs for the dinner party.

　 A. asked, dozen　　 B. suggested, dozens of

　 C. had, dozen　　 D. persuaded, dozens

答：A. dozen 与several, many及数词连用时，不用复数形式，后也不接of，如three dozen pencils。

9. _________cave that George has discovered in his lifetime is near the Alps.

　 A. The hundredth　　　 B. The hundred

　 C. Hundredth　　　　　 D. A hundredth

答：A。第一百个，序数词前应用定冠同。

8. She bought her son two __________ pencils.

A. dozen of　　　 B. dozens　　

C. dozen　　　　 D. dozens of

答：C．dozen与数词连用，不用复数，另外dozen后一般不与of连用，若接of时，后应有the，these，those等限定词或them，如I want three dozen of the / these / those pencils或I want three dozen of theme。