A:x+y+3=0
B:3x-y-9=0
C:x+3y=0
D:4x-3y+7=0
38-19=
(____) It's a programme about China.
(____) We've got lots of food.
(____) Thank you for talking to us.
(____) She couldn't read or write.
(____) He didn't have any legs then.