1Nanjing, ____ capital of Jiangsu Province, has ___long history.

What’s wrong with the little boy一He is .He can’t hear anything.

This wall of air is an effective answer to the problem and it ____ work. —But it is a question to put such a wall of air around the statue.

I think the trousers are a little expensive ,can you show me .

We should get prepared for dealing with ________problems_________