Teachers have to constantly update their knowledge in order to maintain their professional ___.
He found them ______ at a table ______ .
I was about to go out _______ the telephone rang yesterday.
—Miss Wang,I feel very nervous with the competition approaching. —.As long as you can finish it,it is a victory.
Could you give me a hand?It seems that my strength has .
Had I been a little more careful,I such a foolish mistake.