970AM is the worst radio station because ________.
—Must I take the medicine every day? —No, you _______.
He eats _______ food, so he is _______ fat.
—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.