1.  since then I had never seen him again.

2.  I have never see it before.

3.  Dear Shuyi, I haven't seen you for some weeks I miss you very much .

4.  They all could see nothing .

5.  The officials can't see anything.

6.  I haven't seen them for some time because of the busy studying.

7.  I can't see the whiteboard so well without the glass .

8.  Until last weekend, I have never seen my mother crying.

9.  A man can't see anything after drinking.

10.  So without her glasses, the woman couldn't see the boy kill his father.