1. You must to finish your project today. → You must finish your project today.
2. She can speaks French fluently. → She can speak French fluently.
3. They don't can enter without a ticket. → They can't enter without a ticket. или They don't enter without a ticket.
4. You should not to ignore the rules. → You should not ignore the rules.
5. We needn't hurry. The meeting was canceled. → We don't need to hurry. The meeting was cancelled.