91.　 We visited a few factories, ___ had a good market at home and abroad. A. their products B. whose product C. the products of which D. those products

90.　 The pen ___ he is writing is mine. A. with which　 B. in which　　　　　　　 C. on which　　　　　　 D. by which

89.　 There are many research stations in the area ___ the soil is studied. A. at which　　　 B. on which　　　　　　 C. in that　　　　　　　　 D. in which

88.　 The bank ___ Jack has worked for years is trust-worthy. A. in which　　　 B. in that　　　　　　　　 C. in it　　　　　　　　　　 D. there

87.　 Her husband, ___ is two years older than she, is a teacher. A. as　　　　　　　　　 B. he　　　　　　　　　　　　 C. who　　　　　　　　　　 D. whom

86.　 They promised to help us, ___ we were thankful. A. for it　　　　　　 B. for which　　　　　　 C. for that　　　　　　　 D. for whom

85.　 Dorothy was always speaking highly of her role in the play, ___, of course, made the people unhappy. A. as　　　　　　　　　 B. who　　　　　　　　　　 C. that　　　　　　　　　　 D. which

84.　 After living in Paris for 50 years he returned to his hometown ___ he grew up as a child. A. which　　　　　　　　　　　　　 B. where　　　　　　　　　 C. that　　　　　　　　　　 D. in the place

83.　 My home village is no longer the same ___ it used to be. A. which　　　　　　　　　　　　　 B. as　　　　　　　　　　　　 C. where　　　　　　　　　 D. in which

82.　 Here is the book, ___ you can find the list of irregular verbs. A. in the back of which B. the back which C. on the back of it D. whose back