Witout the air to hold some of the sun’s heat, the earth at night ________, too cold for us to live.
We tried our best to __________ his doubts and let him tell the truth.
Unfortunately __________ her, her parents died early. However, she is fortunate __________having a goodhusband.
Which do you enjoy __________ your weekend, fishing or watching TV?
According to a recent U. S. survey, children spent up to 25 hours a week __________ TV.
—Why didn't you give a hand to the boy? —I __________ but he __________ to his feet before I tried to.