— Jack, do you know the answer ______ this question? It’s too difficult for me. — Sorry, I don’t know. You can ask Jim for help. He is good at math.
His grandparents ________ at home on weekends.
Sam is __________ at Chinese than Jim. A. good B. well C. better
The boy is too young tohimself. A. look at B. look after C. look on
Eating a lot of vegetablesgood for your health. A. am B. is C. are
My father often tells me some jokes to make me_________. A. laugh B . to laughC. laughing