The faces of four famous American presidents on Mount Rushmore can be seen from a ____ of 60 miles.
When you are on the bus to work in the morning, smile to the people sitting beside you, you will get his smile ______.
_______ we _______ the new policy for economy, we would never have bought the house.
If you _______ just wait for a moment, I’ll try to find your papers.
Riding a bicycle can be fun. But _______ you ride a bike to work, and then there isn’t one to ride home?
We consider it necessary that a plan _______ before doing the work.