18.　 Healthy eating can make your body f_________ well.

17.　 He quickly g________ experience.

16.　 People who are on a d______ mustn’t have chcolate.

15.　 O________ food is more and more popular with the people.

14.　 Water b_____ at 90℃ at the top of the mountain.

13.　 She gave us a t_______ piece of cake to eat.

12.　 We should keep the b________ of nature.

11.　 Do you like strong or s________ drinks?

10.　 That beer made me quite __________(困乏的、困倦的)

9.　　　 Fish is easy to __________(消化) when you are ill.