Why are you lying in bed? —— A __________ walk __________ me completely tired．

The mountain was_____ steep (陡峭的) _____ few people in our city reached the top.[ ]

Tony lost his wallet. He didn’t talk to __________ all the afternoon.

Don’t bring food to the party. If you do, the teacher will ________ .

We can have ___ blue sky if we create ___ less polluted world.