Find and correct mistakes in the auxiliary or modal verbs in the sentences below.

1. A luxury watch worth £30,000 has being stolen from a jeweller's shop in London.
2. I wish I won't have to do the weekly shopping all by myself tomorrow.
3. I'm afraid your cake is inedible. You must have followed the recipe from start to finish.
4. If I have remembered about his birthday, I would have bought him a present yesterday.
5. We would better not indulge in any more desserts and cakes.
6. You mustn't eat broccoli if you don't like it - just leave it on the plate.