I failed in the final exam last tem. Only then the importance of studies.
| A．I realized | B．I had realized | C．had I realized | D．did I realized |
The visitor asked to have his picture taken ____ stood the famous tower.
| A．wherever | B．at which | C．the place where | D．where |
If the man is only interested in your looks, ____ just shows how shallow he is.
| A．as | B．which | C．what | D．that |
So long as Peter goes all out to do the work, I don't mind how long it _____ him to complete it.
| A．took | B．will take | C．take | D．takes |
—This book is ______ more useful for us students.
—Yes, but it is _____ too difficult.
| A．quite; quite | B．much; rather | C．rather; quite | D．quite; much |
It is required that each of the students chosen _____ good preparations ahead of time.
| A．has to make | B．will make | C．should make | D．must make |