词语辨析. A. add up/add to/add up to 1. Five ____ seven makes twelve. 2. The pupils are too young to ____ these figures. 3. The amount of money he makes a month ____ more than 59 000 dollars. B. calm/still/silent 4. After the storm the sea became ____ again. 5. Keep ____. I am taking a photo of you. 6. Don't keep ____ on bad behavior. C. too much/much too 7. Never drink ____, for it is bad for your health. 8. The question is ____ difficult for me. Would you please help me out?