77.　　 77.　　 This room had but a single window, ______ were kept closed when it was not in use.

a. which its shutters　　　 b. its shutters of which　

c. the shutters of which　 d. which shutters

76.　　 76.　　 This machine is new. ______, it is in excellent condition.

a. Furthermore　　 b. However　　 c. Otherwise　　 d. but

75.　　 75.　　 The time will surely come ______ ordinary people could operate computers as well.

a. while　　 b. when　　 c. as　　 d. on which

74.　　 74.　　 The airplane crashed and over a hundred passengers were killed, ______.

a. and that shocked the world　　 b. and which shocked the world

c. this fact shocked the world　　 d. which shocked the world

73.　　 73.　　 ______ the bridge were packed with cars and buses, it could still carry twice the load.

a. Despite　　 b. Provided　　 c. Unless　　 d. Even if

72.　　 72.　　 ______ you try, you’ll never lose your English accent.

a. No matter what　　 b. How hard　　 c. No matter how hard　　 d. Whatever hard

71.　　 71.　　 Not everybody could be expected to know all the answers, ______ some questions called for educated guesses rather than general knowledge.

a. as　　 b. so　　 c. such　　 d. once

70.　　 70.　　 The size of the audience, ______ I had expected, was well over ten thousand.

a. which　　 b. that　　 c. as　　 d. whom

69.　　 69.　　 ______ he performed the task with success.

a. It was expected　　 b. Which was expected　　

c. As was expected　　 d. That was expected

68.　　 68.　　 Nuclear weapon is considered the most terrible weapon of war ______ man has invented.

a. which　　 b. that　　 c. as　　 d. since