--- Look! The lights in the classroom are still on. __________
A: turning them off
B: turn them off
C: to turn them off
D: having turned them off
A: turning them off
B: turn them off
C: to turn them off
D: having turned them off
举一反三
- --- The light in the office is still on. A: turn it off B: having turned it off C: to turn it off D: turning it off
- I forget ______ the light in the office, so the lights in the office are still on. A: turning off B: to turn off C: having turned off D: turned off
- I thought I ____ the light, but it is still turn on. A: had turned off B: was turning off C: have turned off D: would turn off
- The light in the office is still on. John's forgotten ___ . A: turn it off B: turning it off C: to turn it off
- （）the road, and you will come to the post office. A: If you were to turn off B: Turn off C: Turning off D: Having turned off