QUES: Simulations of school life are in great demand because they played like schoolboys out there who could do anything what their school would not dare because of various reasons

correct the punctuation.

CORRECTED: Simulations of school life are in great demand, because they played like schoolboys out there who could do anything, what their school would not dare because of various reasons.

QUES: It has not been possible to perform a validation of the model against experimental data since a sufficiently controlled set of data was not found

correct the punctuation.

CORRECTED: It has not been possible to perform a validation of the model against experimental data since a sufficiently controlled set of data was not found.

QUES: There I will give you my love 713 The mandrakes give forth fragrance At our doors are all kinds of precious fruits new and old

correct the punctuation.

CORRECTED:
There I will give you my love. 7:13 The mandrakes give forth fragrance. At our doors are all kinds of precious fruits, new and old,