It’s standard practice for a company like this one______ a security officer.
The picture _______ on the wall is painted by my nephew.
The lady said she would buy a gift for her daughter with the ________.
_______ in 1636, Harvard is one of the most famous universities in the United States.
_______ time, he’ll make a first-class tennis player.
Remember _______ off the light when _______ to bed.