1.　 The actors make us laugh by ____________________ somebody’s way of dressing or

telling an amusing story.

11.But if you ____________________ nature and correct time of the year, you will have to do more work and the results will not be so good.

练习八(Unit 20)

10. ____________________ GM watermelons will be seedless and there is GM rice, sometimes called “golden rice”.

9. More advanced technical information was ____________________from abroad in the 1980s.

8. Although China is a very big country, only seven percent of the land can _______________ farming.

7. The changes in eating habits will ____________________ agriculture and nature. (have on)

5. He is a failure all the time because he _____________wisdom and effort.

6. .Qi min yao shu written by Jiasixie is a ­­­­­­­­­­­­______________ guide to farming.

4. ___________ we couldn’t make contact with each other, but later we came across in the street.

3. ______________ yourself is the best way to show your independence.

2. The old houses are __________________and they need rebuilding.