It’s _____ hard problem for the twins that ____ of them can work it out.
- What would you like to order? - Let me have a look at the_______, please.
The price is too_______. I won't take it.
Just_______ here and don't go anywhere, or your parents won't find you.
In our school there_______ a library and three classroom buildings.
Look at that little boy. He_______ near the shopping mall. Let's help him.