I. 根据句意及首字母提示补全单词
1. In s ________ class，we made an experiment. It was interesting.
2. Please f _______ the jar with water.
3. Let’s m _______the c ornstarch and water together.
4. Do you know wat er is a l_______?
5. I know who d________ the America.
6. The force of air is strong e________ to hold the water.
