Which of the following statements about verb substitution (do or do so) is correct?

A、Verbsubstitutionisusedtoreplacepreviouslymentionedverbstoavoidrepetition.
B、Verbsubstitutioncanonlybeusedinthepresenttense.
C、Usingverbsubstitutioncanmakesentencesmoreconcise.
D、Verbsubstitutioncanbeusedinvarioustenses.