人教版九年级上册英语书Unit8答案(2)

7Section A 4a答案

1.might be  

2.must be  

3.could be  

4.Can't  be  

5.could be/must be

8Section B 1b答案

a.2  b.3  c.1

9Section B 2a答案

so一expressing a result as，because，

since一giving reasons but，however，

though一expressing a difference not only…

but also一adding information 

or一giving a choice when，

while一expressing two things happening at the same time

10Section B 2d答案

1.and  

2.as  

3.not only,but also  

4.and/or  

5.however

11Self Check答案

1.can't  

2.could/might  

3.must  

4.might  

5.can't