89. Half of the visitors _____ from Europe. Half of the fruit _____ bad.

　 A. is; are　　　　 　B. is; is　　　　 C. are; is　　　　　　　 D. are; are

88. This kind of snakes _____ very dangerous. These kinds of metal _____ hard to find.

　 A. is; is　　　　　　 B. are; i s　　　 C. is; are　　　　　　　 D. are; are

87. The population of the earth _____ increasing fast. One third of the population here _____ workers.

　A. is; are　　　　　　 B. is; is 　　　　C. are; is　　　　　　　 D. are; are

86. It is this teacher who ______ leaving for London. It is you who ____ next.

A. are; are　　　　　 B. is; are 　　　C. are; is　　　　　　　 D. is; is

85. Only 10 percent of the students in the class _____ League members. About 40% of Jim’s income ________ to the rent (租金). 　　

　A. are; goes　 　　　　B. are; go 　　　　C. is; goes　　　　　　 D. is; go

84. one sixth of our classmates _____ from peasant families. One fifth of her time ____ devoted to writing.

A.　 comes; is　　 B.　come; are　　　 C.　 come; is　　　　　 D.　 comes; are

83. A woman with two children ______ coming up to us. Mary, along with her parents, ___ moved to Paris.

　 A. is; has　　　　 B. is; have　 　　　　C. are; have　　　　　 D. are; has

82. Every picture except these two _______. Everything around us _____ matter.

A.　have been sold; is　 B.　 have been sold; are　 C.　 has been sold; is 　　D.　 has been sold; are

81. What they have done ______ of great use to us. What he says and what he does ___ agree.

A.　 is; not　　　 B.　is; do not　　　 C.　are; does not　　　　 D.　are; not

80. He is one of the boys who _____ never late for school. He is the only one of the boys who _____ never late for school.　

　A. is; are　 　　　B. are; are 　　　　　　　　C. are; is　　　　　　 D. is; is