Although this         sound like a simple task, great care is needed.

 Terribly sorry, I came home at last. I _____of the supermarket ________so crowded.

Since she is angry, we ____ her alone.

 Attention, please. All of you students _______ remain in their seats until all the papers have been collected.

Without the timely aid from different provinces, the affected people in those areas ________ the difficulty.