It was ______ in the exam that ______ how much time I had wasted.
| A．not until I failed;I realized | B．until I failed; I didn’t realize |
| C．not until I failed; did I realize | D．until I failed; I realized |
They have always treated us with open hands and we must be generous _______.
| A．in return | B．in addition | C．in vain | D．in case |
The chief editor expressed his doubt _______senior people would enjoy reading such magazines .
| A．which | B．how | C．whether | D．that |
As your instructor advised ,you ought to spend your time on something ______researching into .
| A．precious | B．worth | C．worthy | D．valuable |
Fancy Williams not ______the answer to such an easy question ！
| A．know | B．to know | C．knowing | D．knew |
______letting go of a god chance like that ,the silly girl .!
| A．Fancy | B．Suspect | C．Suppose | D．Wonder |