Everyone needs a friend, ___ you can share the bad times and the good times with.

How would you like     if you didn't see me for two or three days?

 — Which do you prefer, coke or juice?   —________ is OK. But water will be better if possible.

Of the equipment we have produced, this sells best, for it has the advantage over ________ of working efficiently.     

Some people say jogging is good;  ____ believe jogging does harm to people’s health.