31.　 Eat less food ___B____ you want to put on weight .

A. if　　 B. unless　　 C. until　 D. as soon as

30.　 It is often said that an American starts a speech with a joke , ___C____ a Japanese has an apology to make.

A. which　 B. what　　 C. while　　 D. that

29.　 I’ll leave him a note __A_____ he’ll know where we are.

A. so that　　 B. so as　 C. in order　 D. for

28.　 It won’t be long __B_____ you regret what　 you’ve done.

A. after　 B. before　 C. since　 D. then

27.　 ___C____, I am sure that he is honest.

A.　　 No matter people say

B.　　　 What people say

C.　　　 Whatever people say

D.　　 It doesn’t matter people say

26.　 You’ll surly make progress　 ___C____ you work with a strong will.

A. unless　　 B. until　　 C. as long as　　 D. as well as

25.　 ___A____ he finished his work , he left hurriedly.

A. As soon as　　 B. As if　 C. Unless　　 D. In order that

24.　 Jack was very tired ___C____ he played tennis all afternoon .

A. if　 B. as soon as　　 C. because　 D. before

23.　 ___A____ he was sleeping , they stole his clothes.

A. While　　 B. When　　 C. As　 D. Which

22.　 He was walking along the sands __B_____ he saw a big foot-print in the sand .

A. while　　 B. when　　 D. as　 D. after