There are many online food shopping sites(网址). This is very surprising. Things like CDs， MP3， magazines and DVDs sell well online. But it is quite different to sell food online because people like to see food with their own eyes. It is very importan

　　A. have； been

　　B. had； been

　　C. have； gone

　　D. had； gone

　　A. dead B. dying C. died D. diing

　　A. you B. yourself C. yours D. yourselves

　　A. sings B. singing C. to sing D. sang

　　A。I B. me C. my D mine

　　A. makes　B. is making C. make D. made

　　A.but B.and C.or D.so

　　A。in B. at C.on D.for

　　A. in a bus　B. by plane C. on foot　D. by car

　　A. what hes reading　　　B. what is he reading

　　C. what does he read　　D. he reads what