The death of her dog made her sad, and it took a long time to it.
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.
--The weather is too cold ____ March this year. —It was still ____when I came here years ago.