Modal verbs MUST, CAN, HAVE TO

You ___ use your flash inside the Museum, it's forbidden.

All children ___ fasten their seatbelts when travelling by car.

You ___ drink that. It's poison.

He ___ be in the garden. I am sure he is there.

She ___ be in London now. I saw her at school in the morning.

You ___ be very rich to go skiing nowadays.

We ___ do so many things around the house, that we couldn't call you.

I can't go out now. I ___ do my homework, my mummy tells me.

We have to be cautious.We ___ try and cross the river now.

We ___ take our food to school. We went to the canteen.