Good evening,
1- Must and have to are both used for obligation and are often quite similar.
They are both followed by the infinitive.
( must ) is a stronger obligation
We often use (must) for more personal opinions about what it is necessary to do, and (have to) for what somebody in authority has said it is necessary to do. (Rules)
- You don’t need to worry about the exam 😊:
First, the sentences are going to be from the book or similar to the ones in the book.
Second, exam questions should be clear with one logical answer.
2- Both questions are accepted , the first question is better.
How often do you play?
3- About page number 61, you are asked to write about one question. So most probably you will choose one interesting question to talk about.
Anyway, you should read all the questions and understand them.
Good Luck 🌷
Ola M