Should or Must?

To express prohibitions we use…

• Should

• Mustn’t

• Should

• Shouldn’t

The ambulance _______ come when a big accident occurs.

• Should

• Shouldn’t

• Must

• Mustn’t

Mauricio _______ bring something for the dinner.

• Should

• Mustn’t

• Shouldn't

• Must

It is a good idea to talk to the teacher

• You shouldn’t

• You should

• You must

• You mustn’t

Answer explanation

Reemplaza lo subrayado por una de las expresiones. Cuidado con cambiar el significado

You ________ enter this room.

• Mustn’t

• Shouldn’t

• Should

• Must

It is extremely important to be on time for the test.

• You shouldn’t

• You should

• You must

• You mustn’t

It is not a good idea to give Copito human food.

• You shouldn’t

• You should

• You mustn’t

• You must

Choose the correct sentence for the sign

• You should stop

• You shouldn’t stop

• You mustn’t stop

• You must stop

You mustn’t eat inside the store.

• 
• 
• 
• 

You should be careful with the dog.

• 
• 
• 
•