根据句意和首字母提示补全单词。

1. I don't like summer because it's too h________.

2. —Do you know the w_______?

    —It's fine.

3. —Which s________ do you like best?

    —Autumn.

4. In s ________, the trees turn green.

5. —Where do you come from?

    —I come from a great c________, China.