1.许多严重吸烟的人都会接受这样一个观点：吸烟对他们的肺有害.
2.对于她自己的生活,她说不清那是怎么发生的
3.大卫告诉她,她可以离开但是她一定不能带走孩子.
4.一个人不可能不注意它.
5.People have been visiting the great wall from all over the world continuously.
6.They got lost in the forest,and to make matters worse ,their food has run out .
7.I have books with one thousand ,these books take up half of the room.
8.I spent the whole morning in cleaning up my room ,but it is really hard ,because I have too many books.
9.This small room is full of things,including several cases of cloth and hundreds of books .
10.For what I have said before,I have nothing to add.
1.He has been lying to me all the time, but I found it out after many years.
2. The explanation was simple, but very unusual
3. I hope that won’t cause too much trouble with you.
4. The fire makes me totally at a loss.
5. I found your name and address by chance,I picked up a paper which you carelessly throw away
6. Now ,the fire caused by a snake and a bird has been put out, the fire players are checking the ground carefully, in order to find out the cause of fire, but up to now , they didn’t find out
7. He noticed a dead snake which had been lifted by a bird from the ground and throw on the wire
8.The snake in winding itself around the wire sent the spark to ground,the spark caused this fire.