Mostly these look great! There were a couple that were off.
4. This came taste good, I'll buy it.
I think you were probably looking for a different word than came? (A food?) Also, you'd use "tastes" with "this".
9. She appears to be sad. She had might heard about the accident.
It should be "she might have heard about the accident."
10. Do you know Deborah? She comes for dinner tomorrow.
This might actually be correct, but a more natural way to say it would be "she is coming for dinner tomorrow."