Scientists are convinced ___ the positive effect of laughter ____ physical and mental health.
A. of; on B. by; in
C. of; at D. on; at
—Never say never, and you’ll make it.
—That’s it. .
A. I can’t agree with it.
B. You’ve got a point there.
C. You’ve got me there.
D. Action speaks louder than words.
My uncle hasn’t been able to quit smoking, but at least he has .
A. cut out B. cut off
C. cut down D. cut up
—Can I pay the bill by check?
—Sorry, sir. But it is the management rules of our hotel that payment be made in cash.
A. shall B. should C. can D. will
With a large amount of work , the chief manager couldn’t spare time for a holiday.
A. remained to be done B. remained being done
C. remaining to be done D. remaining to do
______ from the space, the earth, with water _______ seventy percent of its surface, looks like a blue ball.
A. Seen; covered B. Seen; covering
C. Seeing; covering D. Seeing; covered
