135. If it _____ too much trouble， I'd love a cup of tea.

　　A. isn't

　　B. wasn't

　　C. weren't

　　D. hadn't been

　　136. If the fire alarm is sounded， all residents are requested to _____ in the courtyard.

　　A. converge

　　B. assemble

　　C. crowd

　　D. accumulate

　　137. If the United States had built more homes for poor people in 1995， the housing problems now in some parts of the country _____ so serious.

　　A. wouldn't be

　　B. wouldn't have been

　　C. will not be

　　D. would have not been

　　138. If Tom wins tomorrow， he _____ thirty races in the past four years.

　　A. will win

　　B. has won

　　C. would have won

　　D. will have won

　　139. If we believe something is good and true we should _____ to it.

　　A. hold up

　　B. keep on

　　C. hold on

　　D. keep up

　　140. If you _____ James， ask him to phone me.

　　A. should see

　　B. must see

　　C. might see

　　D. would see

　　141. If you are required to do some work， it must be done _____.

　　A. sooner or later

　　B. after all others

　　C. at last

　　D. in the long run

　　142. If you know what the trouble is， why you don't help them to _____ the situation？

　　A. simplify

　　B. modify

　　C. verify

　　D. rectify

　　143. I'm sorry， but what he thinks is not of the _____ important to me.

　　A. worthy

　　B. valuable

　　C. valueless

　　D. priceless

　　144. I'm sure your suggestion will _____ the problem.

　　A. contribute to solving

　　B. be contributed to solve

　　C. contribute to solve

　　D. be contributed to solving

　　145. I'm very much obliged to you _____ the information.

　　A. on

　　B. for

　　C. with

　　D. of

　　146. In American universities， classes are often arranged in more flexible _____ and many jobs on campus are reserves for students.

　　A. scales

　　B. ranks

　　C. grades

　　D. patterns

　　147. In Beijing， the season of the year is probably _____ fall.

　　A. later

　　B. last

　　C. latter

　　D. late

　　148. In spite of the wide range of reading material specially written or ______ for language learning purposes， there is yet no comprehensive systematic program for the reading skills.

　　A. adapted

　　B. acknowledged

　　C. assembled

　　D. appointed

　　149. In that country， guests tend to feel they are not highly _____ if the invitation to a dinner party is extended only three or four days before the party date.

　　A. admired

　　B. regarded

　　C. expected

　　D. worshipped

　　150. In that country， students will be _____ admittance to their classroom if they are not properly dressed.

　　A. declined

　　B. deprived

　　C. denied

　　D. deserted