They asked many questions ___________ had nothing to do with that topic.
About __________ of my classmates in my class were born in 2000.A. two third B. four fifth C. three fourths
All of us find __________ difficult to do the exercise.A. this B. it C. that
I don’t think he can read the new words so well, __________?A. can he B. can’t he C. do you
—Must I come before 7:00 tomorrow?—No, you ________.A. needn’t B. mustn’t C. couldn’t
Our teacher often uses the Internet ________ he often sends emails.A. or B. and C. but