Please correct these sentences

1. Ann fainted, because she heard an ominous laugh.
2. Tom couldn't move his swollen knee.
3. Ann has withstood a withstand severe period.
4. A caterpillar crept on up the steep climb.
5. A wasp has stung Tom, so he has a swollen nose now.
6. Tom is resilient, so he will withstand with any complex issue.
7. I hear a crunch. - It is Tom chewing a pizza, which has a solid crust.- Ou, I thought somebody's bone had was broken.
8. You should to change your point of view worldview.- You connote suggested/demanded that I have to accept your point of view.
9. Are you a polymath? - Maybe, but I don't know what it means the word "polymath". - So, Then you are definitely are not a polymath.
10. I want to express my gratitude that because you don't give up and continue to persist, helping me.

1. Ann fainted because she heard an ominous laugh. 

2. Tom couldn't move his swollen knee.
3. Ann has to withstand a severe time.
4. A caterpillar crept on steep and started climbing upwards.
5. A wasp has stung Tom, so he has a swollen nose now.
6. Tom is resilient, so he will withstand any complex issue.
7. I hear a crunch. - It is Tom chewing a pizza, which has a solid crust.- Ou, I thought somebody's bone was broken.
8. You should try to change your worldview.- You connote that I have to accept your point of view.
9. Are you a polymath? - Maybe, but I don't know what is meant by the word "polymath". - So, you definitely are not a polymath.
10. I want to express my gratitude that you don't give up and persist in helping me.