Lesson 2: Healthy habits

A. Use the prompts to write sentences with can and must or mustn't.

1. You (borrow) my mobile, but you (pay) for any calls you make.

You can borrow my mobile, but you must pay for any calls you make.

2. You (phone) me tonight, but you (call) me after 11p.m.

You can phone me tonight, but you mustn't call me after 11p.m.

3. We (have) a party, but we (clear up) afterwards.

We can have a party, but we must clear up afterwards.

4. She (make) a cake, but she (use) all the butter and eggs.

She can make a cake, but she mustn't use all the butter and eggs.

5. You (use) my camera today, but you (take) any photos of me.

You can use my camera today, but you mustn't take any photos of me.

6. I (have) tea at night if I want to, but I (drink) coffee.

I can have tea at night If I want to, but I mustn't drink coffee.

7. They (play) video games, but they (turn off) the computer by 10 p.m.

They can play video games, but they must turn off the computer by 10 p.m.

8. They (stay) at my house tonight, but they (leave) tomorrow morning.

They can stay at my house tonight, but they must leave tomorrow morning.

B. Complete the school rules with must, mustn't, or can.

• College starts at 8.00 a.m. You must be on time. You mustn't be late. If you are late, you must go to the school office and give the reason.
• You mustn't, smoke anywhere in the college or playground.
• You can bring your mobile phone to school, but you mustn't use it in class.
• You can bring food and drink to school if you want, but you mustn't take it into the library or classrooms.
• You mustn't eat, drink or chew gum in class.
• You must be polite to your teachers and the other students.
• You can use the gym after school, but you must tell a PE teacher you are going to.

Match the sentences beginnings to the endings.