When I entered the room, I found a little boy _____ on his mother’s knees _____ to draw a picture.
I’m sure that your letter will get _____ attention .They know you’re waiting for the reply.
_____ unemployment and crime are high, it can be assumed that the latter is due to the former.
The incomes of skilled workers went up. ____ , unskilled workers saw their earnings fall.
—Go now?— It's too late; tomorrow will be a _________time for you to visit them.
Compared with his sister, Jerry is even more_____to, and more easily troubled by , emotional and relationship problems.