Resposta :
a- We visit our grandparents last month.
We visited our grandparents last month.
b- Kitty didn't played a game with Max last night
Kitty didn't play a game with Max last night.
c- She watches cartoons on TV this morning.
She watched cartoons on TV this morning.
d- Do you understand the grammar lesson?
Did you understand the grammar lesson?
Bons estudos!