Modal verbs for obligation and permission

- Is it a formal meeting?

- No, you ____ wear a tie.

- Can I smoke in here?

- I'm afraid you can't. You ____ smoke anywhere inside this building.

- What's wrong? You look stressed.

- I am. I ____ finish all this work before the end of the week. There's so much of it.

- Mr Long, I'd like to take the day off tomorrow.

- Sorry, I'm afraid you _____. We're too busy in the office tomorrow.

- You looked worried. What's wrong?

- I have a meeting with my boss today. I _____ to get to work on time. Otherwise, I'll lose me job.

- Why can't Sarah come with us?

- She ______ prepare a presentation for her boss.