All of them try to use the power of the workstation ___ information in a more effective way.
We ___ our new neighbors yet, so we don't know their names.
Both sides have accused of breaking the contract ___.
You know he is not going to let us leave early if we ___ get the work done.
More and more young people are fond ___ playing tennis nowadays.
——When did it begin to snow? ——It started ____ the night.