用所给词的适当形式填空(英语题)

问题描述:

用所给词的适当形式填空(英语题)
1.The _______ (America)boy is reading a book.
2.I often hear her _______ (sing)in the next door.
3.I think the mooncake is _______ of all.(delicious)

American
singing
delicious