Extra boiling water should be kept at hand just ______ it is needed.
He would be sure ________ disasters if I didn't stay to keep an eye on him.
—Whose advice do you think I should take? —________.
I would rather________Professor Smith and I would rather you________for him at once.
I lost my key this morning,so I had no choice but________for my husband.
—Excuse me,can you spare me a few minutes? —________?