Most air pollution is caused by the burning of ____ like coal, gas and oil.
| A．fuels | B．articles | C．goods | D．products |
Maybe Mr. Green is really in ______ debt, for he is losing ______ weight quickly.
| A．/ ; his | B．/ ; / | C．the; / | D．a; / |
________ many times, he still couldn’t understand it.
| A．Told | B．Being told | C．Having been told | D．Having told |
Always read the ______ on the bottle carefully and take the right amount of medicine.
| A．explanations | B．instructions | C．descriptions | D．introductions |
Don't leave matches or cigarettes on the table within the _____ of little children.
| A．hand | B．reach | C．space | D．distance |
She had a computer at home, and her parents desired that she ______ all her work at home.
| A．do | B．does | C．did | D．doing |