Rewrite each sentence beginning as shown. Do not change the meaning

Ex7. Rewrite each sentence beginning as shown. Do not change the meaning.
1. You were wrong to study so late!
=> You shouldn’t _______________________________________
2. Perhaps Tim has lost his way.
=> Tim might __________________________________________
3. Linda came to the airport at 5 a.m. but it wasn’t necessary.
=> Linda needn’t _______________________________________