More and more people have a low-C life and the air is getting much ___ than a few years ago.
Cindy is clever. _______hair is black. We all like _______.
—Good morning, class! —___________.
I don’t know the answer. Can you tell me the ______ answer?
The weather report says it will rain tomorrow, so bring an ______with you.
Mark isn't coming to the concert ______ he has got too much work to do.