He ______the bus and found a seat next to the window.
It took me a long time before I was able to fully appreciate what they _____ for me.
With difficult problems ___, the president feels relaxed now.
Little _____ that we were watching his every move, so he seemed to be going his own way in his business.
----_____he dropped out of school? ----His family has run into financial difficulties.
When I talked with my grandma on the phone, she sounded weak, but by the time we ____ up, her voice has been full of life.