You can save water by using the bucket instead of the ___________
hosepipe
_______ the lights when you leave the room!
turn off
What´s for dinner? Last night´s ________ are in the fridge.
leftovers
What does polluted mean?
contaminated with harmful or poisonous substances.
You mustn´t _______ up the bath to the top, it wastes water!
fill
You _______ walk on the grass
shouldn´t
couldn´t
musn´t
wouldn´t
We _______ be at school by nine o´clock
ought not
shouldn´t
need to
needn´t
Don´t walk on that bridge! It´s too _______________
dangerous
Gran Via is very __________, there are too many people!
crowded
The river ____________ be polluted, but now it is filled with oil and trash!
didn´t use to
You _______ turn off the lights to save energy!
ought to
needn´t
shouldn´t
need to
