73.（）

Since his wife died, he has ( ) himself into the research work.

I want to buy a new tie to （ ） my brown suit.

When he arrived in that country, he found that there is little occasion to speak Chinese.

I’d rather read than watch television; the programs seem （） all the time.

What's the best title for the passage?

You’ll be fined ______ you return the books to the school library by this weekend.

The water will be much more polluted unless some measures______ right now.

I have heard a lot about him ___ I came back from abroad.

57.（）

You're going to England next year. You should now practice _____ English as much as possible.

These are plastic and wooden chairs but the _______ are more expensive.