Add punctuation: But there are a few powerful options in Debian apart from KDEsystemsettings that can help providing spotless rendering with other fonts as well
A: But there are a few powerful options in Debian (apart from KDE>systemsettings ) that can help providing spotless rendering with other fonts as well.

Add punctuation: In some previous paragraph was shown that under certain circumstances some patterns would resemble patterns in metal shavings produced while passing of current through the conductor
A: In some previous paragraph was shown, that under certain circumstances, some patterns would resemble patterns in metal shavings produced while passing of current through the conductor.

Add punctuation: But individual labor activities was not interpreted in a strict Marxian sense
A:
But individual labor activities was not interpreted in a strict Marxian sense.