单选题：(2013·咸阳一模)When we entered, we found lying on the ground..

As a writer, I like ________ when people send me pictures of their lovely children reading my books.[ ]A. thisB. thatC. oneD. it

______worries her a lot that her husband gets homelater and later. [ ]A. That B. It C. WhatD. Which

We all know that,__________ ,the situation will get worse.[ ]A. not if dealt carefully withB. if not carefully dealt withC. if dealt not carefully withD. not if carefully dealt with

__________ is known to us all that the earth is smaller than the sun.[ ]A. WhatB. As C. Which D.It

________ worries me the way he keeps changing hismind.[ ]A. This B. ThatC. What D. It