1. Uncle Li is repairing the broken watch to make it              (use)．
2. It's important to pay attention to the             between English and Chinese. (different)
3. He needn't              (coach) these kids for the coming football match.
4. It's a pity they put off              (start) the museum.
5.             (use) extra words helps to make language more polite.

1. Mr Green buys many ______ (toy) for his little son.
2. She likes ______ (sing),but she doesn't want ______ (sing) now. 
3. Uncle Li is ______ (friend), he often helps me with my maths.
4. That shop is ______ (open), you can buy a pen there.
5. No news ______ (be) good news.