i feel so sorry —— my mistake  
to   and   for   填哪个?  

with my mother·s help，I   —— cook several dishes  
can    may   must
   哪个  

C

did not

回复：2楼
for

It was my first day in the factory and i didn't know how th use the machine.

5.he went to the downtown area______yesterday   ,
on foot   with foot     on feet  
6.please close all the windows ______ you leave the   classroom.       
when       if      /  


7.I,d like some vegetable   soup______   .              
staet with         to start with     to   start  


回复：12楼
5、6、 7
你是好人。。

I think you should work hard on Enlish , the questions you gave are very easy , and i believe you can get the answers after your own effort.Do not just get the answer form others. wish you can succeed.