Answer:
- Apart from the question words or the yes/no tags, a question can begin with auxiliary verbs like will, shall, can, etc.
 - The word 'can' is specifically used to request or get permission for something.
 - The word 'can' is joined by the subject and the main verb in the question.
 - Questions beginning with 'can' are answered with a yes or no answer in short or expanded form'. 
 - Question: "Can I pay you later?"*
 
Step-by-step explanation: