— You should            your teacher’s advice if you want to improve your science.— That sounds great.

—Jack, what do you usually do after supper? --Well, I____ stay at home and watch TV, but now I ____ taking a walk.'

When the little boy saw his mother, he _______  very excited.

- I suppose you are at least 60 years old.- Thank you. I’m glad you______ that. My real age is 362.

Could you please ____ the window? It’s too cold outside.