改英文、问问题 .a large amount of water covering是什么意思?

改英文、问问题 .a large amount of water covering是什么意思?
You should learn to.yourself .any danger 你应该学会使自己免受任何危险、逗号部分应该填什么?
we had to stay at home..the bad weather.由于天气很糟糕、我们不得不呆在家里 .
好几千人参加了这次演出.用英文怎么说?
I don't have ...as you.我的书不如你多 .天空 .