Answer:
All the sentences have been rewritten using modal verbs.
Explanation:
Modal verbs in English are: could, can, would, ought to, should, shall, must, might. They a type of helping verbs which use probability, ability, permission or obligation in a sentence with the help of these words. They can make question by inversion like "she can go" can be written as "can she go?"
The give sentences can be written as:-
1. You must not use this office.
2. My advice is that you should not eat too much junk food.
3. Could I carry your suitcase?
4. Can I go out now?
5. It might snow later.
6. You could take your Dad's car for tonight.
