You just think of yourself! You kept me wailing for at least three hours． —I’ m sorry that you _____________ think so．

some famous scientists havethe qualities of being both careful and careless

I heard her______ outside.

We shouldn’t s0pent our money testing so many people, most of __________ are healthy.

What annoys me most is that every time I ________, he seems to be checking up on me.