17. Therefore, other things()equal, the member of workers that employers want decreases.

16、Fish can＇t live ______ water.

15、I am going to _______ the meal, I insist.

14、A long time ago, I _______ in London for three years.

13、We should not look down ________ the poor people.

12、It is because he is kind and modest ________ he wins the respect of all presents.

11、He helped me ______ my homework.

10、These flowers ________ a fragrant perfume.

9、Mathematics ________ study or science of numbers.

8、We offered him our congratulations _______ his passing the college entrance exams.

7、We＇ve ________ paper and ink. Ask Mr. Howard to lend us some.