(2013·辽宁五校第一联合体高三考试)The little child ________ go out alone at night, so he ________ walk in the dark that night.

________ I be free tomorrow, I would go with you.

I was caught in a traffic jam for over an hour, otherwise I ________ you waiting for such a long time.

— Why do we get up so early?— If we ______ the flight we would have to stay here for another day. 

–Where are the students? How could they keep us waiting for so long? –They started an hour ago and they ____ be here in fifteen minutes, I think.