Smoking is bad for your health. You’d better _______.
---Happy Birthday, Jim! ---_____!
I’m sure I can improve ____in spoken English in two years’ time.
We should return the books to the library ____time.
---Carl, why not go and help your sister water the flowers there? ---Why__________? I’m busy myself. Jack is lying on the grass doing nothing.
---___________ is it from here to Yancheng Railway Station? ---About two kilometers.