Doctors should take special care when treating children because their breathing rate is different from _____ of adults.
-I wonder whom you are waiting for.-The policeman __________ the traffic accident.
-$ 100,but that is my last offer.-__________.
The threats to the health of astronauts in space are very different from __________ on earth.
He even __________ to call the deal off if we didn't satisfy his demands.
Mother has told us to __________ some candles in the house in case the electricity is off. So now we are busy __________ the coming night.