Unit 6 Modals

We don’t have to take the bottles to a recycling bin; they are collected with our other rubbish.

All schools should recycle their waste paper.

With more money, charities can save more elephants.

This article says there are over 1,000,000 tigers in the wild, but that can’t be right - they’re an endangered species.

The principal has agreed; he says we may have an environment day at school!

The woman in the chemistry lab must be the new science teacher.

I don’t know how I’m going to train this guide dog; he just won’t obey orders.

The firefighters won’t be able to put out the forest fire without water planes.

He might need some help, but let’s check with him first.

Companies mustn’t dump their chemical waste in rivers; it’s dangerous and illegal.

Miranda will often go walking in the countryside for hours at a time.

You’re bound to see Milly if you go to the demonstration later.

Martin finished work hours ago, so he ought to be home by now.