_____his leg wounded accidentally, he still came to the meeting on time.
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.