Jack is often seen _______ basketball with his friends after school.
Paul is friendly to us.He always___good solutions to our problems.
I have to finish my homework first_____ cleaning up the room.
The Olympic champions_____ all the audience excited at 2004 Olympic Games.
Mr. Zhou was really anxious _____he can’t find his car.
— What would you do if you won the lottery? — I would give it_____ medical research.