It is not how much money you will give us but that you are present at the ceremony ______ really matters.
I can’t remember _______ you started doing the work.
In order to have _____ better understanding of the accident, the three witnesses were called for _____ second meeting.
The human body consists of organs, each ____a definite job to do.
It is a long time ________ they separated, but it won’t be long ________ they meet again.
_______ his scientific work, he has no time to care for his family affairs, _______, of course, his wife always complains about.