Помогите плиз разобраться с модальными глаголами
Choose the most appropriate modal verb to complete the dialogue. Listen and check.
We’re having an environmental 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
1) should/have to do to protect the environment. You
know, how we 2) have to/can help to save the planet.
B: That sound’s interesting. What do you do?
A: Well, for a start, everybody 3) had better/should walk
or cycle to school so that we save energy. And we
4) can’t/must make sure we don't waste energy when
we are there.
B: How do you do that?
A: To begin with, we remind everybody of what they
5) can/don’t have to do to save energy.
B: Like turning lights off in empty rooms, you mean?
A: That’s right. We have a rule that the last person to leave
a room 6) can/must turn off the lights and close the door.
B: Why do you 7) must/have to close the door?
A: To keep the heat in, of course! You 8) should/can never
leave doors open because heat will escape!
B: Goodness! I never thought of that! I think we 9) had
better/have to have an environmental awareness day at
y school, too!
