1. I spend an hour to do my homework every day.
2. I am the fastest
3. I am not hard-working than my sister.
4. My biggest problem is pronunciation.
5. I'll work this afternoon if you don't mind.
6. Learning English takes him an hour
7. We don't understand as them.
8. The button is too high so we can't reach it.
9. ?
10. It is a twenty-minute report.
