Over the past decades, sea ice in the Arctic as a result of global warming.
A. had decreased B. decreased C. has been decreasing D. is decreasing
Life is like a long race we compete with others to go beyond ourselves.
A. why B. what C. that D. where
I like in the autumn when the weather is clear and bright.
A. this B. that C. it D. one
It was the long March Rocket 2F, as reported, sent Shenzhou VI spaceship into space.
A. which B. what C. that D. as
Don’t leave the water while you brush your teeth.
A. run B .running C. being run D. to run
—May I tell this to my close friend?
—No, you . Never let anybody else know about it.
A. needn’t B. shouldn’t C. mustn’t D. can’t
