Where did you find these sentences, and their "answers"?

1. she did not tell me the story "what" you had told me.(ans: that)
She did not tell me the story that you told me.

2. he taught me and which I admire most even today (ans: that)
(I can't make sense of this sentence)

3. she was playing which was not liked by her father (ans: that)
She was playing, which was not liked by her father.

4. The only person who can read and write English well is my friend (ans: that)
The only person who can read and write English well is my friend.

5. which cannot be cure, must be endured (ans: that)
What cannot be cured must be endured.

6. Don't respect such persons who have no respect for elders (ans that)
Do not respect peoples who have no respect for their elders.

7. This is the best which we can do in the present circumstances (ans that)
This is the best (that) we can do in the present circumstances.