【2014浙江丽水】Good friends are like stars. You don’t always see them, ______ you know they are there.
—How are you feeling today? —________ I think I can go to the picnic with you tomorrow.
We should eat _______ fruit and vegetables, but _______ meat. It is good for our health.
—Must we keep the window _______ all the time? —No, you don’t have to.
Smoking can help you relax. But _______ it is also bad for your health.
I have some problems with my health. Can you give me some _______?