Write the correct full form of the verb. Don't use short forms with (') in this task!
Use the rules about if-sentences and wish-sentences.

1. If I you, I would go to the dentist’s. (be)

2. I have lost my keys. If I had been more careful, I them. (lose)

3. Did you buy that hat you saw? No, but I wish I it. (buy)

4. You my notebook, if you want to. (can / borrow)