Unit 2 综合检测题I.单项选择1. Mrs Water doesnt like her old-fashioned car; she _buy a new one.A. has to B. must C. had to D. mustnt2. The number of the workers in Mr. Blacks factory _500.A. be B. is C. are D. were3. A lot of children spend too much time _ TV.A. watch B. to watch C. watching D. watched4. He must be in the room, because the light in the room is _.A. in B. on
