A driver should __ the road when .
She said,“ Please be careful. Don't knock off the glass of water. ”—She asked me _________knockoff the glass of water.
Knowing her son was out of danger, the mother sighed _________ relief.
The building was completely _________ by fire.
—Why are they _________ the forest?—They are _________ some criminals.
He had his camera ready _________ he saw some-thing that would make a good picture.