When the rain stops ,I ___________ for a walk in the cool, after rain air.
I called ________ his house this morning, but he wasn’t in. So I left a message telling him I would call______ him the next day.
The man _______you played a trick is from Canada.
—Are you coming to the Christmas party?—I’m not sure. I_____ go to the concert instead.
Is it _________ Tom often plays computer games ________ makes you angry?
__________ many times, he still couldn't understand it.