My mother ________ always wave goodbye to me while I was leaving for school.

(2009江苏南通调研) I forget where I read the article, or I _____ it to you now. 

We were stuck at the airport because of the heavy fog, otherwise we ________ here in time for the conference.

You would have helped your mother do some housework. But you_______.

 It was the order that all the soldiers ________to the front.