The president stood by a window inside the room, ____, looking over the square.
| A．where I entered | B．into which I entered | C．which I entered | D．that I entered |
_______ makes the book so extraordinary is the creative imagination of the writer.
| A．That | B．What | C．Who | D．Which |
I can’t remember _______ you started doing the work.
| A．that it was when | B．when it was that |
| C．when was it that | D．that was it when |
In order to have _____ better understanding of the accident, the three witnesses were called for _____ second meeting．
| A．a; a | B．the; a | C．a; 不填 | D．不填; the |
The human body consists of organs, each ____a definite job to do.
| A．Have | B．to have | C．Has | D．having |
It is a long time ________ they separated, but it won’t be long ________ they meet again.
| A．since, before | B．after, when |
| C．since, when | D．after, before |