用括号中所给词的适当形式填空。 1. Our classmates are ve

问题：

用括号中所给词的适当形式填空。

1. Our classmates are very________(friend) to me.

2. The ______(leaf) on the tree begin to fall.

3. — How often go to the library?

    — ______(two)a week.

4. Please give my ________(greet) and best wishes to her.

5. — What's the weather like today?

    — It's _______(sun).