Modal Verbs: complete the sentences with the right modal verb

Be careful when you walk across that old wooden bridge. It _________ be very safe.

I see you haven't finished your homework yet. It __________ be very difficult, then.

You _________ do any more training today. You look so tried. Take a break!

You _________ drive me to the airport. I can take the bus.

You __________ always wear warm clothes when you go skiing.

Danny _________ swim when he was only three. Now he's part of the town's swimming team!

Leaving the house today without an umbrella __________ be such a good idea. It
looks like it might rain in the afternoon.

Mike __________ left the house. His cell phone is still here, and he never leaves
without it.

I don't know where he is. Take a look in the garage. He ________ be there.

John _________ taken a wrong turn somewhere. Otherwise, he'd be here by now.