Fill in: checked in, check out, check on, checked off, check up on

Can you go upstairs and _______________ the kids?

He _______________ at the Europa Hotel.

Henry called me to _________________ some facts.

The teacher ____________ the children's names ___ as they entered.

I’d like to ______________ than new restaurant.

1)check out

2)check in

3)check up

4)check in

5)checked off

6)check in