(2014·安徽皖南八校三联)A positive attitude，________with willingness to seek appropriate help and exercising solid study habits，will do much to determine how well you do in your studies.

—Was he still there when you were away to answer the phone?—There is no doubt about it, but he ________ soon afterwards.

 He never    to help others in trouble because he is a kind-hearted man. 

—Lily is going to make a presentation in class this afternoon.—Oh, really? I ________ it was Michael's turn.

The snowstorm ________ our difficulties.