一、 1 ～ 5、 B B A B D  
6 ～ 10、C D C B A  
11 ～ 15、 D A D C A

二、 1 ～ 5、 B C A D C  
6 ～ 10、A C B D D

三、1 ～ 5、 B B A C D   
6 ～ 10、A B C A D

四、1、From shops or supermarkets.   
2、 No, we shouldn't.  
3、 We can buy many kinds of nonprescription medicines.  
4、 No, they don't.
5、 Pain pills.  

五、1、toothache  
2、 foot  
3、 stomachache
4、 trouble  
5、 knife  
6、 take  
7、 headache
8、 herself
9、 decision
10、death

六、 1、didn't; until  
2、 the matter  
3、 decided to
4、 give up  
5、 did; do

七、 1、thinking twice  
2、 take risks  
3、 take; breaks/rest  
4、 keep on  
5、 thanks to   

八、1 ～ 5、 D F C E B

九、 One possible version:
Dcar Mr. Wang,
I'm very sorry that I can't go to school today because I have a cold.  Yesterday evening,  I had. a headache and fever: My fE:lther had to take me to see a doctor.The doctor saicl I had a cold.  He asked me to take some medicine three times a day. .And he aiso advised me to lie in bed and rest.  So I want to ask for one day off. I think I can go to school tomorrow. Thanks.
Zhang Hua
September 9th

一、 1 ～ 5、 B B A B D  
6 ～ 10、C D C B A  
11 ～ 15、 D A D C A

二、 1 ～ 5、 B C A D C  
6 ～ 10、A C B D D

三、1 ～ 5、 B B A C D   
6 ～ 10、A B C A D

四、1、From shops or supermarkets.   
2、 No, we shouldn't.  
3、 We can buy many kinds of nonprescription medicines.  
4、 No, they don't.
5、 Pain pills.  

五、1、toothache  
2、 foot  
3、 stomachache
4、 trouble  
5、 knife  
6、 take  
7、 headache
8、 herself
9、 decision
10、death

六、 1、didn't; until  
2、 the matter  
3、 decided to
4、 give up  
5、 did; do

七、 1、thinking twice  
2、 take risks  
3、 take; breaks/rest  
4、 keep on  
5、 thanks to   

八、1 ～ 5、 D F C E B

九、 One possible version:
Dcar Mr. Wang,
I'm very sorry that I can't go to school today because I have a cold.  Yesterday evening,  I had. a headache and fever: My fE:lther had to take me to see a doctor.The doctor saicl I had a cold.  He asked me to take some medicine three times a day. .And he aiso advised me to lie in bed and rest.  So I want to ask for one day off. I think I can go to school tomorrow. Thanks.
Zhang Hua
September 9th