We all know that learning a foreign language ______ time and effort.
Which one is ________ , football,baseball or basketball?
---_______do you have an art festival in your school? ---Once a year.
–Can I ask you _________questions? – Sure.
On the eve of Christmas, children usually ______ their stockings at the end of the beds. A. put away B. put on C. put up
Each of the students ________ a book on the desk. A. has B. have C. is