Question

Use DO or DOES
A) _________ she write letters?
B) _________ you speak English?
C) _________ they know the USA?

Use DON’T or DOESN’T
D) We___________ study in the morning.
E) I __________ like ice cream.
F) Fred ____________ sing well.

Answer 1

DO se usa para I, you, we e they
DOES se usa para she, he e it 

a) Does
b) Do
c) Do

d) Don't
e) don't 
f) doesn't

Answer 2

Does / Do / Do

don't / don't / doesn't