---What should I do, doctor?
---_____healthy, you should take more exercise.
A. Keep B. Keeping C. To keep D. Having kept
--- Do you often watch Man and Nature on TV?
--- Sometimes. It’s an interesting program, but I __________Sports News.
A. prefer B. accept C. dislike D. refuse
In the past few years there _________great changes in my hometown.
A. have been B. were C. had been D. are
--- Don’t step on the grass next time, Mike.
---________.
A. Is that so? B. Don’t worry. C. No, I don’t D. Sorry, I won’t
They _______ in Nanjing since they came to China two years ago.
A. lived B. have lived C. live D. are living
I don’t know when my son ________ back. When he_________ back, I’ll call you.
A. comes, comes B. will come, will come
C. comes, will come D. will come, comes