Of the two pens, the boy bought ______ expensive one at last.

—What a nice watch it is!  —Yes. It’s _________ one of all. 

Debbie is growing fast. She is even____________  than her mother.

 —If there are _____ people driving, there will be ____ air pollution.— Yes , the air around us will be fresher and cleaner.

 — The dish is delicious! — Well, at least it’s as __________ as the one I cooked yesterday.