When I got on the bus, I I had left my wallet at home.
Can you tell me ___________________? You look upset.
These shoes look very nice. I wonder _______________.
Eastern areas have ________ too many wars in the past fifty years.
A U.N. peace-keeping _______ was sent to that country and the soldiers would devote all their _______ to their job.
The book is primarily ___________ Soviet-American relations during the Cold War.