---What should I do, doctor? ---_______healthy, you should take more exercise.
—Can you help me clean the classroom? —___________.
I used to ___________ in the country. But now I am used to ___________ in the city.
He ___________ Taizhou for two weeks.
—How long has Eliza been a nurse? —___________.
—Have you ___________ been to Beijing? —Yes. But only once.