_____ we can see, we can’t get very far in this project without her help.
A. As long as B. So long as C. So far D. As far as
Try ____ she might, Sue couldn’t get the door open.
A. if B. when C. since D. as
More than one company ___ the new design to market only to see it quickly denied by those who couldn’t wear them.
A. has taken B. has been taken C. have taken D. have been taken
During our stay in London, the guide book ___ a great help. We all had a wonderful time.
A. behaved B conducted C. served D. proved
Her behavior is __________.
A. worthy praise B. worthy to be praised
C. worth to be praised D. worth being praised
—The room is so dirty, _____ we clean it?
—Of course.
A. will B. shall C. would D. do
