Now the air in our city is _______ than it used to be. Something must be done to stop it.

 She parked her car outside the window _______, but the next morning she found it missing. 

He always looks ________. Now he is looking ________at his new drawing.

--What do you think of the match?--Wonderful! Our team has never played __________.

A: _____is Mary?B: I think she is at home．