从A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。
1. —Do you often listen to       radio or watch      TV ?
  —Well , I seldom watch      TV , and I haven’t got       radio . 
  A. / ; / ; the / a        B. the ; / ; / ; a       C. / ; the ; the ; the     D. the ; the ; / ; a      
2. You ______ till the lights were green before crossing the road, or you wouldn’t have been hurt.
  A.should wait     B.must wait     C.should have waited     D.must have waited