Don't handle the vase as if it ________ made of steel.(2012·北京)
Mother was worried because little Alice was ill, especially_______ Father was away in Canada.
He doesn’t like to be interrupted if he_______ .
—What was the party like? —Wonderful. It’s years_______I enjoyed myself so much.
You will be late_______you leave immediately.
We shall go to help them_______we are free.