D
a 1/5<3/5
b 8/21<8/9
c 3/5<1
d 7/5>1
chọn A
a 1/5<3/5
b 8/21<8/9
c 3/5<1
d 7/5>1
goes thành go
B
theo mình :
Does he go to the library every week?