_______ in thought, I didn’t notice what was happing.

For little kids, drawing is ____.

Shortly after publication, the book became ____ because of the writer’s repeated use of the negative word "nigger" to refer to the black Americans. 

I’ve decided to move to the countryside, for I’ve had _____ of the noises here.

— What do you think of investing in today’s stock market? — There are many risks, but also many         gains．