64. The clever boy made a hole in the wall, ____ he could see ___ was going on inside house.

A. which; what　 　B. through which; what C. through that; what 　　D. what; that

63. Is oxygen the only gas ____ helps fire burn?

A. that　 　B. / 　　C. which 　　D. it

62. During the days____, he worked as a servant at the Browns.

A. followed　 　B. following　 　C. to follow 　D. that followed

61. The number of the people who ___ cars ______ increasing.

A. owns; are 　　B. owns; is 　C. own; is 　　D. own; are

60. I shall never forget those years ____ I lived on the farm with the farmers,_____ has a great effect on my life.

A. when; who 　B. that; which　 C. which; that 　D. when; which

59. ----Did you ask the guard ____ happened?

----- Yes, he told me all ____ he knew.

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

58. 　Smoking, ______ is a bad habit is, however, popular.

A. that 　B. which 　C. it 　D. though

57. You can depend on whatever promise ___ he makes.

A. /　 　B. why 　C. when 　D. whose

56. He is not such a man ____ would leave his work half done.

A. that B. which 　C. who 　D. as

55. This is the magazine _____ I copied the paragraph.

A. that　 　B. which 　C. from that 　D. from which