What I do to help you? 2. Can, must, need

To help me, you can provide me with specific questions or topics related to your university exam preparation. Additionally, you can ask me for explanations, resources, or study tips on any subject you are struggling with.

Regarding your second question, "can," "must," and "need" are modal verbs that express different levels of possibility, obligation, or necessity.

• "Can" is used to indicate the ability or possibility to do something. Example: "I can speak French."
• "Must" is used to express strong necessity or obligation. Example: "I must finish my assignments by tomorrow."
• "Need" is used to indicate a requirement or necessity for something. Example: "I need to study for my upcoming exams."