4. you do your homework two days ago?
a)Do b)Will c)Did
5.His sister puzzles yesterday.
a) didn’t play b) doesn’t play c) won’t play
6.My sister is the pupil in her class.
a) good b) better c) best
7.This baby is the baby in the world.
a)smart b) smarter c)smartest
8.Tigers are than dogs.
a) big b) bigger c) biggest