QUES: When we reach the goal we can choose a new skill for our stick man

correct the punctuation.

CORRECTED: When we reach the goal we can choose a new skill for our stick man.

QUES: More specific testing includes taking a muscle tissue sample especially important in masticatory diseases

correct the punctuation.

CORRECTED: More specific testing includes taking a muscle tissue sample, especially important in masticatory diseases.

QUES: Do you want to check the delivery time

correct the punctuation.

CORRECTED:
Do you want to check the delivery time?