--- Measures must be taken to stop factories from wasting energy in course of production. ---___. The energy is becoming scarce day by day.
He is running____the wind towards the station_____ Tom running ________the right.
I don’t think you can work out the maths problem____her help.
My uncle lives____116 Changhe Street. His room is ____the sixth floor.
The old man died______ cold _______ a cold night.
The trees ___front of the house are ___the charge of Mr. Li.