—How long have you been in Qiqihar?
—________ my father came here to work five years ago.
When
While
Since
I told myself to stay ____________ .
The little girl is too frightened ____________ a word.
The young man is __________ to carry the heavy box.
Our teacher told Simon ___________ forget __________ the door.
The floor is wet. Who’s going to ___________ ?