根据句意填空。

1. We were            with joy and jumped           . (wild)

2. His father died            he was only three months old.

3. When did you meet her            the first time?

4. It is hard            me to work out the maths problem.

5. Do you know how to survive            the wild?

6.            what do you want to kill the sheep?

7. At an early age, the boy lived            his own.

8.            four months, the baby weighed 10 kilograms.

9. He will stay here for            to 14 days.

10. Who has taken my pen           ?