56. It just isn’t fair, ____ I was working as a waiter last month, my friends were lying on the beach.

A. whenever

B. though

C. for

D. while

57. ____ he sells computers for a living, Bruce says that he doesn’t know much how they work.

A. Now that

B. While

C. As

D. Until

58. January 8th saw events taking place in the US city of Memphis to mark ____ would have been Elvis Presley’s 75th birthday.

A. what

B. which

C. that

D. where

59. We knew we were getting close to the park ____ we started seeing the tiger right next to the road.

A. until

B. unless

C. while

D. when

60. MacDonald, who had spent much of his time ____ graduating from college back-packing around Europe, decided last year to settle down.

A. when

B. while

C. since

D. before

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