民用建筑工程室内氢污染来源于大理石、水泥、地质断带处。

补全对话

A: You should go to an English corner. B: What can I talk about? C: You should learn English well. D: What’s the problem? E: You should speak first. F: What can I do for you? G: You should go out more.

B=Bill     F=Bill’s   friend
F: What’s  wrong?  Bill? You are not looking happy.
B: I’m not.I feel a little worried about my English.
F:    小题1:  
B: I’m not getting along well with it.
F: Why not?
B: Well.I seldom(很少) have chances (机会) to meet English people.
F:   小题2:   
B: Where should I go?
F:  小题3:   
B: But … it seems English people never speak to me.
F: Ah!  小题4:   
B:     小题5: 
F: The weather! English people are always interested in the weather.