C
cochucuanhungnoibuon_movenoiay


1. he đevelope his own program .... partnership with an American expert
a. on
b. at
c. of
d. in
2. Mary said: "I should go to the library:.
Mary said that she ...to the library
a. should
b. should have gone
c.ought to
d. better go
a. on
b. at
c. of
d. in
2. Mary said: "I should go to the library:.
Mary said that she ...to the library
a. should
b. should have gone
c.ought to
d. better go