He was about to leave the office for home _______someone knocked the door and asked for some help.
A. untilB. whileC. asD. when
There are nearly one hundred foreign students in our university, most of _______ are from America and Australia.
A. whichB. themC. whomD. those
Working hard in study is important, but_______ as important is the desire to learn.
A. merelyB. equallyC. nearlyD. partly
In the opinion of Li Ming, a science student in that high school, physics is_______ chemistry, but muc
h easier than English.
A. as difficult a subject asB. as a difficult su
bject as
C. a subject so difficult asD. difficult as a subject as
They did everything in their power to save the building dating back to the Qing Dynasty, but their efforts were _______.
A. in turn B. in timeC. in vainD. in need
–I am so glad I caught you at home. I need your help!
–_______, Robin?
A. What’s up B. What else C. How come D. Why not
