Teenagers _______ allowed to drive in the street .
There are so many kinds of pens in the shop ,I can’t decide ______.
The young man used to _____to work, but he is used to ______to work now.
---Please turn off the light. ---OK, Mom. I won’t leave the room ______ the light _____.
--- He went to see the man who was in hospital yesterday. --- ____________.
_ he tried many times, he still couldn’t move the heavy box.