Rewrite the following sentences by rectifying the errors in the use of modals.
1. Would I have your autograph?
2. I can be fifteen next April.
3. Take an umbrella. It should rain later.
4. The magistrate ordered that he might pay the fine.
5. Make me a cup of tea, shall you?
6. You may speak politely to the elders.
7. You will get your teeth cleaned at least once a year.
8. We could grow vegetables in our kitchen garden but we don’t do it now.
9. Must I get your jacket? The weather is cold.
10. Could the train be on time?