If you ______ earlier, you ________ him.
A. came; would meet B. had come; would have met
C. had come; would meet D. would come; met
Great changes __________ in our hometown in the past twenty years..
A. have been taken place B. has been taken place
C. have taken place D. were taken place
John, look at the time. ________ you play the piano at such a late hour?
A. Can B. Need C. May D. Must
He looked as though he _________ a ghost（鬼）.
A. saw B. has seen C. have seen D. had seen
He stood for an instant with his hand still ___________.
A. raised B. raising C. rose D. risen
_____ is known to all, the age _______ children can go to school is seven.
A. What; which B. It; when C. As; at which D. Which; when
