用单词的适当形式填空1.We are sad ____(think) about all those animals i

用单词的适当形式填空
1.We are sad ____(think) about all those animals in danger.
2.Tom was surprised ____(meet) his good friend,Jack was in this strange city.
3.I am happy ____(hear) that he won the first place in the painting match.
4.They were excited ____(see)so many presents.
5.John is ready ____(help) others,so we all like him.