Neil Armstrong was the first astronaut to walk on the moon, where no man ____ ever walked before.

When the team reached the top, they ____ several members.

'Who ___ the equipment for the expedition?'

'It was John.'

'You won't meet Jane today.'

'Why not? ___ invited her to the party?'

'___ you enjoy hiking?'

'No, I think it's very tiring.'

'Tom won the chess tournament!'

'Really? Who ____?'

You could teach me how to dance, __ you?

'Is that your sister jogging in the park?'

'It ____ be her; she hates exercise.'

Sammy ___ be tired. She's been climbing all day!

Louise ___ takes sculpture lessons, but it isn't certain.

That was a great view from the top of the hill, ____ it?

'I hurt my knee when I fell off my skateboard.'

'You ___ to be more careful.'

You ___ buy a new camera; you can borrow mine.

You ___ go to bed early. It's Saturday tomorrow, so there's no school.