Fill in the correct preposition.

Alice always checks ____________ her children to make sure they are sleeping peacefully before she goes to bed herself.

Laura checked _________the items on her shopping list as she went around the supermarket.

Would you like to check___________ the new café at the weekend?

Tom paid his bill and checked _____________ the hotel.

I arrived at the airport and checked ___________.

I’ll just go and check ___________ the children