SUSAN STUDIED VERY WELL, ……… ..SHE COULD PASS THE EXAM.A. SO B. I...

149. - BAI TAP TRAC NGHIEM TONG HOP A9
BAI TAP TRAC NGHIEM TONG HOP A9

149. Susan studied very well, ……… ..she

could pass the exam.

a. so b. if c. but

d. or.