The rainbow _____ as the sun came fully out from behind the clouds.
| A．dissolved | B．removed | C．resigned | D．disappeared |
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 |
_______ his scientific work, he has no time to care for his family affairs, _______, of course, his wife always complains about.
| A．devoted to; which | B．Devoting to; which |
| C．Being devoted to; that | D． Devoting to; that |