QUESTION: Fix punctuation: In order for these nervous impulses to work and end in orgasm another signalling substance acetylcholine is necessary
ANS: In order for these nervous impulses to work and end in orgasm, another signalling substance, acetylcholine, is necessary.

QUESTION: Fix punctuation: An ideal option for low clearances
ANS: An ideal option for low clearances.

QUESTION: Fix punctuation: 42Your teeth are like a newly shorn flock which have come up from the washing where every one of them has twins
ANS: 4:2Your teeth are like a newly shorn flock, which have come up from the washing, where every one of them has twins.

QUESTION: Fix punctuation: It had been bad weather for the harvest in France for many years View school work
ANS:
It had been bad weather for the harvest in France for many years. View school work "