I just don’t understand_______ that prevents so many Americans from being as happy as one might expect.

I had to ______ because someone elsewanted to use the phone

The train was crowded and I had to get intoa carriage ____ already seven other people.

I read about you and decided to come and hear you play.I’m very glad I ______the effort

When she was walkingin the street, she met a friend of _______.