—Did the thieves _______ into the car?
— No, they______.
| A．fell; didn’t | B．fall; did |
| C．jump; didn’t | D．jump; did |
( ) We must ______ and wait at a red light.
A. stopping B. stops C. stop
（ ）The bus is _________ .
A. coming B. come C. comes
（）You must look right_________ you cross the road.
A. before B. at C. on
（ ）We must pay attention _______the traffic lights.
A. at B. to C. in
（ ）We must ______ and wait at a red light.
A. stopping B. stops C. stop