Rewrite the sentences using modal verbs. 1. I am sure they are at home. 2. Perhaps I won't come in the evening. 3. I am sure this is not right. 4. Perhaps we are early. 5. What do you think is better for us to do? 6. it's not possible for me to return. 7. It is prohibited to cross the street here.

1. They must be st home2. Maybe I won't come in the evening3. It can't be be right4. Maybe we are early5. What shall be better for us to do?6. It can't be possible for me to return7. it is not to cross the street here