Sentence correcting

1.His daughter asked a question it was a difficult moment.
1.His doughtier asked a question, so was it a difficult moment.
2.The fog was thick it was hard to see.
2.The fog was thick, and it was hard to see.
3.He felt sick as he got ready to throw the grenade.
3.He felt sick as he got ready to throw the grenade.
4.He threw the grenade it made a sound.
4.He threw the grenade, and it made a sound.
5.Kiowa gave him some advice it didn't help.
5.Kiowa gave him some advice, and it didn't help.
6.He gets upset when he thinks about the war.
6.He gets upset when he thinks about the war.