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26. -We’re supposed to be there at 6:00?

　　 -_______ I know.

　　　 A．As soon as　　　 B．As far as　 C．So long as D．As possible as

25. I thought things would get better, but 　　　　　it is they are getting worse.

　　　 A．before　　　　　　　　 B．because　　　　　　　 C．as　　　　　　　　　　　 D．after

24. Although he knew little about the large amount of work done in the field , he succeeded 　　　other more well-informed experimenters failed.

　　　 A．as 　　　　　　　　　　 B．unless　　　　　　　　 C．what 　　　　　　　　 D．where

23. John waited at the bus-stop for nearly half an hour 　　　　　　the bus finally arrived .

　　　 A．when 　　　　　　　　 B．as 　　　　　　　　　　 C．before 　　　　　　　 D．while

22. Not that I’m unwilling to lend you a hand ,　　　　 　I’m too busy for the moment .

　　　 A．because 　 B．but that 　 C．but 　 D．however

21. Jack had traveled six miles across the Channel 　_____his engine failed and was forced to land on the sea .　　　

　　　 A．when 　　　　　　　　 B．until 　　　　　　　　　 C．after 　　　　　　　　　 D．since

20. _____ I know the money is safe, I shall not worry about it.

　 A. Even though　　　 B. Unless　　　 C. As long as　　　 D. While

19. -When did he leave the classroom?

　　　 -He left　　　 you turned back to write on the blackboard.

　　　 A．the minute　　　　　 B．the time　　　　　　　 C．until　　　　　　　　　 D．before

18.　　　 he thought he was helping us with the work, he was actually in the way.　　　　

　　　 A．Although　 B．Unless　　　 C．Because　　 D．When

17. Hearing his words ,I couldn’t decide 　　　　　or remain .

　　　 A．whether to go abroad 　　　　　　　　　　　　 B．if I go abroad

　　　 C．if to go abroad 　　　　　　　　　　　　　　　　　 D．to go abroad