92. Such signs _____ we use in the book _____ Greek letters.

　 A. as, is　　 B. which, are　　 C. as, are　　 D. which, is

91. _____ is known to all, the earth is round.

　 A. It　　 B. As　　 C. That　　 D. Which

90. He’s from Shanghai, _____ population is the largest of all cities in China.

　 A. whose　　 B. its　　 C. which　　 D. that

89. It is many years _____ we met last in London.

　 A. since　　 B. when　　 C. that　　 D. which

88. It was many years ago _____ I met her in London.

　 A. since　　 B. when　　 C. that　　 D. which

87. The children themselves were calm enough; _____ the parents that got into a

　 panic.

　 A. in spite of　　 B. those were　　 C. it was　　 D. however

86. The young girl is not _____ she used to be a few years ago.

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

85. He must be from Shanghai, _____ can be judged from his accent.

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

84. Mr. Smith isn’t such a man _____ he used to be.

　 A. as　　 B. what　　 C. that　　 D. who

83. The house is just the same _____ it used to be.

　 A. which　　 B. that　　 C. /　　 D. as