单句改错。

1. I don't know if to help him or not. ________

2. She can't help cleaning the house because she's busy making a cake. ________

3. We all hope you to make rapid progress. ________

4. The results of the research are to publish soon. ________

5. It is too heavy for me to lift it. ________

6. It's awfully good for you to come and meet us. ________

7. These are very good books for your children to be read. ________

8. He did what he could help me with my physics. ________

9. Let's find a big bag to put the things. ________

10. It would be easier to climb over the mountain than going round the valley. ________