150. -- Was his father very strict with him when he was at school?

　　 --- Yes. He will never praise him _____ he becomes one of the top students in his grade.

　 A. after　　　　　　　　　　 B. unless　　　　　　　　　　　 C. until　　　　　　　　　　　　 D. when

149. --- Was his father very strict with him when he was at school?

　　 --- Yes. He had never praised him _____ he became one of the top students in his grade. (2003北京)

　 A. after　　　　　　　　　　 B. unless　　　　　　　　　　　 C. until　　　　　　　　　　　　 D. when

148. John shut everybody out of the kitchen. It seemed _____ he wanted to prepare a grand surprise for the party.

　 A. which　　　　　　　　　 B. when　　　　　　　　　　　 C. so that　　　　　　　　　　　 D. as if

147. John shut everybody out of the kitchen _____ he was preparing his grand surprise for the party.

　 A. which　　　　　　　　　 B. when　　　　　　　　　　　 C. so that　　　　　　　　　　　 D. as if

146. John shut everybody out of the kitchen in _____ he could prepare his grand surprise for the party.

　 A. which　　　　　　　　　 B. when　　　　　　　　　　　 C. so that　　　　　　　　　　　 D. as if

145. John shut everybody out of the kitchen _____ he could prepare his grand surprise for the party. (2002全国)

　 A. which　　　　　　　　　 B. when　　　　　　　　　　　 C. so that　　　　　　　　　　　 D. as if

144. You are welcome ______ you come here, for you are our distinguished guest.

　 A. when　　　　　　　　　　 B. whenever　　　　　　　　 C. where　　　　　　　　　　　 D. wherever

143. The second world war broke out _____ he was born.

　 A. when　　　　　　　　　　 B. whenever　　　　　　　　 C. where　　　　　　　　　　　 D. wherever

142. The famous scientist grew up _____ he was born and in 1930 he came to Shanghai. (2002上海春)

　 A. when　　　　　　　　　　 B. whenever　　　　　　　　 C. where　　　　　　　　　　　 D. wherever

141. How I wish I _____ a lot of books to read when I was young.

　 A. has　　　　　　　　　　　 B. had　　　　　　　　　　　　　 C. will have　　　　　　　　　 D. had had