Choose the correct modal verbs

A: We’re having an environment awareness day at school tomorrow.

B: Environmental awareness? What’s that?

A: It’s a special day when we learn about all the things we should/have to (9) do to protect the environment. You know, how we can/have to (10) help to save the planet.

B: That sounds interesting! What do you do?

A: Well, for a start, everybody should/had better (11) walk or cycle to school so that we save energy. And we must/can (12) make sure that we don’t waste energy when we are there.

B: How do you do that?

A: To begin with, we remind everybody that of what they can/don’t have to (13) do save the energy.

B: Like turning the lights in the empty rooms?

A: That’s right. We have the rule. The last person to leave the room must/should (14) turn off the light and close the door.

B: Why do you must/have to (15) close the door?
A: To keep the heat in, of course! You should/can (16) never leave doors open because heat will escape!

B: Never thought of that! Well, I’ll suggest we can/should (17) start the awareness day in my school too! Thanks for the idea!

valeraitrva    2   14.05.2020 17:10    13