从方框中选择合适的词，并用其适当形式填空

we

tooth

child

two

wonder

1. How many ___________does the baby have ? Only one.
2.Millie is so kind that she always helps ____________with English.
3. Everyone is happy about the ___________festival.
4. June the first is ___________ Day. 
5. ---How often does she go to the school library?
---__________ a week.