1. 根据句意及汉语提示填写单词。

1. （1） I often go swimming in summer, because it's (热的).

3. （2） It's getting (凉爽的) in September.

5. （3） Today is sunny and (温暖的). Let's go to the park.

7. （4） The weather is (干燥的) these days. I can't stand it.

9. （5） It's too (寒冷的) outside. We can't go out.