1.Not until I began to work ______ how much time I had wasted.
A. didn’t I realize B. did I realize
C. I did realize D. I realized
2.Do you know Jim quarreled with his mother? I don’t know, _____.
A. nor don’t I care B. nor do I care
C. I don’t care neither D. I don’t care also
3.Not until all the fish in the river _____ how serious the pollution was.
A. did the government realize B. the government realized
C. the government did realize D. didn’t the government realize
4.Little _____ about his own safety, though he was in great danger himself.
A. does he care B. did he care
C. he cares D. he cared
5.Richard has made great progress recently. ______, and ______.
A. So he has; so you have B. So he has; so have you
C. So has he; so have you D. So has he; so you have