81. Laughing at others is ____ we should never do.

A. anything　 　　　　 B. something　 　　　　　　 C. everything　 　　　　　　 D. nothing

80. ________ trees were cut down near the village last month. We must plant more.

　　 A. Many thousands　 　　　　　 B. Many thousands of　

C. Many thousand of　　 　　 D. Many thousand　

79. --How deep is the hole?

--It is ________.

A. four meter deep　 　　　　　　　　 B. four meters deep　

C. four-meter deep　 　　　　　　　　　 D. four-meters-deep

78. 999 reads nine ______.

　　 A. hundreds and ninety ninth　　 B. hundreds and ninety-nine　

C. hundred ninety and nine　　　 D. hundred and ninety-nine

77. Two ______ died of cold last winter.

　　 A. hundreds old people　　　　　　　 B. hundreds old peoples

　　 C. hundred old people　　　　　　　　 D. hundred old peoples

76. Please wait here. I’m sure to be back in _______ hours.

　　 A. two and half a　　　 B. two and a half 　　　　 C. half and two　　　 D. two a half

75. Would you like to try _______ time?

A. the　 second　　 B. second　　　 C. the 2nd　　　　 D. a second

74. We all know that ________ sound doesn’t travel very fast on ________ moon.

A. \; the 　　　　　　　 B. the; \ 　　　　 C. the; the 　　　　　　 D. \; \

73. ________ third lesson is much more difficult than ________ Lesson Two.

A. The; \ 　　　　　　　 B. The; the　　　　　　 C. \; \　 　　　　 D.\; the

72. This time I didn’t go there by ______ train but I went there on ________ train last time.

A. \; \ 　　　　　 　　B. the; the 　　　　　　 C. the; \ 　　　　 D. \; the