A vast area north of the Yangtze River ______by the first heavy SNOW of the new year,causing difficulties to the post-festival road transport.
“You’ve left the light on.” “Oh, so I have. _____ and turn it off.”
New technology ______ to make sure that the cars, taxis, buses and trains we use ______ the air.
The real test of ______ English is whether they can speak, read, write and orally understand good standard English.
—I’ve taken someone else’s green sweater by mistake.—It ______ Harry’s. He always wears green.
_____ this report _____ in such a short time was quite a difficult exercise.