About _______ of the workers in the factory were born in the _______.
A. two thirds; 1970 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 far
C. How long 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; an
C. a; the D. an; a
