题目内容：

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.