选择方框中的单词填空
Covered,without,host,frighten,central,through
1. --- Don’t ___________ the dog.    --- I’m sorry.      
2. --- Congratulation! You did so well in the exam.  
--- Thanks. I couldn’t do well __________ your help.
3. --- Where’s Jiang han ping yuan?  
--- It’s a ___________ area in China.   
4. --- Don’t rush when you go _________ the gate.
--- Ouch, who steps on my foot?
5. --- Look, the snow is so beautiful. 
--- Yes, it ___________ the whole mountain.