About _______ of the workers in the factory were born in ______.
A. two thirds; the 1970S B. two thirds; 1970s
C. two third; 1970 D. two third; 1970s
You can’t believe how terrible the fire is _______ you see it with your own eyes.
A. though B. because C. unless D. since
Driving in rush hour traffic ______ be very dangerous, so you _____ be too careful.
A. should; ought to B. could; should
C. might; mustn’t D. can; can’t
Jerry is always so busy that he can hardly _________ a few minutes to talk with his child.
A. spare B. share C. spend D. save
---________ it is from our own planet Earth to Mars!
--- Yes, it takes months to travel to Mars by spacecraft.
A. How soon B. How long
C. How far D. How often
—Jim took ___ one-hour ride just now. What a short time he spent finishing such a long way!
—He is ______ experienced rider.
A. an; the B. a; the C. a; an D. an; a
