Harry, you can’ go out since you haven’t finished your homework; __________ , a heavy rain is upon us tonight.[ ]

lish class, our teacher often creates anenvironment __________ we are given the opportunity to solve problemsourselves

Is this your sister’s key, John —No, it isn’t. ______ is in the bag.

On his way to the airport, it ________ him all of a sudden that he had forgotten her birthday. [ ]

Mr. Brown arranged for the taxi to come atsix she would not haveto wait long at the station.