________ he has limited technical knowledge, the old worker has a lot of experience.
As is known to us all, success usually ______ hard work while laziness can ______ failure.
She sat at her desk, with her eyes ______ on the book, ______ in its plot.
The young man rushed out of the room, ______ into his car and started it hurriedly, ______ to get home as soon as possible.
______ is known to all is that the old scientist, for ______ life was hard in the past, still works very hard in his eighties.
The number of people present at the meeting ______ about one thousand, a large number of whom ______ experts from abroad.