QUESTION: Fix punctuation: The results of the treatment last from 1 to 3 months and then the procedure may be repeated
ANS: The results of the treatment last from 1 to 3 months, and then the procedure may be repeated.

QUESTION: Fix punctuation: They also aim to make higher education more attractive to increase the proportion of young people with highlevel qualifications
ANS: They also aim to make higher education more attractive to increase the proportion of young people with high-level qualifications.

QUESTION: Fix punctuation: Note that calculations in Table 7 differ from those in Table 3
ANS: Note that calculations in Table 7 differ from those in Table 3.

QUESTION: Fix punctuation: Fluctuations in exchange rates are usually caused by actual monetary flows as well as by expectations of changes in monetary flows
ANS:
Fluctuations in exchange rates are usually caused by actual monetary flows as well as by expectations of changes in monetary flows.