——You’d better give up smoking. It’s bad for your health. ——
David is the tallest student in our class. ______is taller than him.
— ______ you sing the English song? — Yes, I can. But only a little.
Tony is not as clever as Lucy, but he works______ than her.
The house ______ I live in is very small.
He ______ a chance to try it again just now.