"Do so" is the correct usage when "so" refers to an action."Do it" is the correct usage when "it" refers to a noun.
As "do" generally refers to actions, "do so" is more often correct than "do it".
The mind-map-strategy for RCs
1.Skim through the first paragraph.Take your eyes off the screen.
2. Ask yourself the paragraph's "purpose" .Purpose is always very, very brief.Avoid paraphrasing the details.
3. Skim through the next paragraph.Take your eyes off.Ask yourself the paragraph's "purpose".Link the purpose of the first paragraph with that of the second.
4. Keep repeating Step 3 for all the subsequent paragraphs.
On the GMAT, ensure 'completing' each section.- "no attempts" attract greater penalty than "negative attempts" do.
RCs make or break your GMAT.Practice RCs everyday!
Present participles and gerunds "look" the same (verb+ing).However, their roles are different.
Present participle acts as a verb or adjective.Jack is running.
Gerund acts as a noun.Running is healthy.
RCs make or break your GMAT.Practice RCs everyday!