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

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

25.　______ 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 _______ he played tennis all afternoon .

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

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

A. While　　　　　　 B. When　　　　　　　 C. As　　　　　　 D. Which

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

A. while　　　　　　 B. when　　　　　　　 D. as　　　　　　 D. after

21.　You’d better come back earlier _______ it is getting colder.

A. as　　　　　　　　 B. and　　　　　　　　 C. but　　　　　 D. or

20.　He always talks _______ he had been to outer space.

A. like　　　　　　　 B. as if /though　　　 C. because of　　　 D. as

19.　Persist to the end , _______ you are the only one left.

A. even if /though　 B. but　　　　　　　　 C. however　　　　 D. in spite of

18.　We’ll carry the work through , cost _______ it may .

A. what　　　　　　　 B. when　　　　　　　 C. where　　　　　　 D. how

17.　_______ you have got used to it , you’ll like it .

A. While　　　　　　 B. On the condition　 C. Once　　　　　　 D. Unless