when
- When I opened the door, I was surprised Bruce standing outside the door.
- When will the plane ___________?— In an hour.
- When the teacher came into the classroom, we all stopped.
- ______ a light when necessary. You will bring light to other people and yourself.
- When the candle stopped burning, it had __________ the oxygen in the air.
- What are you going to be when you ______?—I am going to be a writer.
- When I passed the river, I saw some children ______ on the sand.
- Last Sunday,when I got to the station,II had left my ticket at home.
- I don’t remember when and where I this umbrella.
- When did you go to bed last night, Tom?—-At 10 pm. But my mother___________,