29、 It was not until dark______he found______he thought was the correct way to solve the problem.

A.that, what                B.that, that                            C.when, what                    D.when, that

28、After supper she would sit down by the fire,sometimes for ______an hour,thinking of her young and happy days.

A  as long as                B.as soon as                      C.as much as                     D.as many as

27、Not only ______to leave his homeland,but ______ taken away by the enemy.

A.he was forced, was everything he had             B.was he forced, everything he had was

C.was he forced, was everything he had             D.he was forced, everything he had was

26、The computers made by our company sell best,but several years ago no one could have imagined the role in the markets that they______.  

  A.were playing          B.were to play               C.had played                     D.played 

25、It made many countries angry______America,without the ______ from the UN,started a war in Iraq.

  A.that,permission       B.which,permit             C.which,permission       D.that,permit

24、If you are able to talk to a friend over the telephone, you feel that you are close _____ the actual distance is not shortened.

  A. even if             B. so long as                   C.if                      D. as

23、Doing your homework is a sure way to improve your test scores, and this is especially true ____ it comes to classroom tests.

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

22、So many uses have been discovered for this wood ____ the supply of white pine is becoming smaller and smaller.

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

21、Is there a bookshop around ______ I can buy an English and Chinese dictionary?

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

20、Although many people view conflict as bad, conflict is sometimes useful ___________ it forces people to test the relative merits of their attitudes and behaviors.

  A. by which         B. to which           C. in that                    D. so that