用所给单词的适当形式填空

1. He likes __________ to the park with his friends.(go)

2. Don't worry. We still have __________ time left.(little)

3. There are three __________ in our class. They speak English.(America)

4. Li Lianjie is a Chinese movie star. But now he is in Hollywood. He can speak __________ and __________.(China, England)

5. We are all Chinese. We all come from __________.(Chinese)

如图所示，温度计的示数是   ℃。图6中，敲响右边的音叉，左边完全相同的音叉也会发声，说明声音可以在   中传播；还可以观察到紧挨音叉的泡沫塑料球弹起，说明声音是由   产生的。