87. -----Have you seen _____pen? I left it here this morning.

　　　　　 -----Is it ___black one? I think I saw it somewhere

　　　　　 A. a; the　 B. the; the　　 C. the; a　 D. a; a　　　　　　

86. Many people agree that ______knowledge of English is a must in _____international

　　　　 trade today.　

　　　　 A. a; X　　 B. the; an　　 C. the; the　　 D. X.; the

85. Wouldn’t it be ____wonderful world if all nation lived in _____peace with one another?

　　　　 A. a; X　 B. the; X　 C. a; the　 D. the; the　　　　　　　

84.She is ____newcomer to ____chemistry but she has already made some important.

　　　 discoveries.

　　　　 A. the; the　 B. the ; X　 C. a; X　 D. a; the　　　　　　　　

83. Many people are still in _____habit of writing silly things in ______public places.

　　　　 A. the ; the　　 B. X; X　　 C. the; X　 D. X; the　　　　　

82. ---Where is Jack?

　　　　 ---I think he’s still in ______bed, but he might just be in ____bathroom.　

　　　　 A. X; X　 B. the; the　 C. the; X　　 D. X; the　

81. Alexander Graham Bell invented ___telephone in 1876.　

　　　　 A. X　　 B. a　 C. the　 D. one　　　　　　　　　　　　　

79. Beyond ____stars, the astronauts saw nothing but _____space.

　　　　 A. the; X　　 B. X; the　　 C. X; X 　　D. the; the　　　　　　

　 [　 ]80 After watching ____TV, she played ____violin for an hour.

　　　　 A. X; X　　 B. the ; the　 C. the; X　　 D. X; the　　　　　　　

78.Alice is fond of playing ____piano while Heney is interested in listening to ____music.　

　　　　 A. X; the　　 B.X ; X　 C. the ; X　 D. the; the　　　　　　　

77. They were deeply impressed by ____hard work and excellent skills of ____Chinese

　　　 doctors

A. X; the　　　 B. the; X　　 C. X; X　　 D. X; a