用正确的介词或者副词填空：
问题描述：
用正确的介词或者副词填空：
1.It was long ____he began to do his homework .
2.I just hope and pray that he'll come back ____ December .
3.The hen gathered her brood _____ her wings.
4.We'll stick to the task ____it is finished.
答
1.till 2.before 3.with 4. if