Modal verbs

1) Young people ______ obey their parents.

• must
• must not
• can not

2) Laura, you and the kids just have dinner without waiting for me. I ______ work very hard today.

• must
• must not
• can not

3) I ______wear uniforms every day at school

• have to
• must not
• can not

4) Leave early so that you ______ miss the bus.

• can
• must not
• can not

1. Teachers _____ wear suits for work, but their clothes must be neat and clean

• do not have to
• must not
• can not

2. Students _____ use their smart phones during the lessons.

• do not have to
• must not
• can not

3. You ____ arrive on time for the meeting. It's important not to be late.

• do not have to
• should
• can not

4. You ____ eat lunch in the school canteen. Some students prefer to go home for lunch.

• must
• can
• can not

5. Students and teachers _____ be polite to each other.

• do not have to
• have to
• can

6. You _____ buy a portfolio, your teacher will give you one.

• do not have to
• must not
• can not