Modals

They have got a huge house. They ... be rich.

...you open the window please?

They... have given me a lift home, but they did.

I...tidy my room today. My mother said so.

You...walk on the grass in the park.

Tom... run very fast when he was twenty.

You... do your homework before you watch TV.

...you help me, please?

The lights are still on. Helen... have forgotten to turn them off.

I...feed the dog at lunchtime. My brother did it in the morning.

You... water the plants this weekend. They look dry.

When... I call you?