Choose ONE of your PBL documents (probably the shorter one...)
Make a COPY of it.
Hit enter between every sentence. Yes, this will make the document ridiculous. Yes, this is fine.
Highlight and erase every sentence after the second page. Ain't nobody got time for all that.
In the copy, go through and highlight EVERY VERB in the same color. A readable one. Only highlight the verbs of SENTENCES, not verbal constructions. If you're not sure, ask!
Assess each verb. If the sentence meets the requirements in the textbook, leave them. If they don't, fix them on the same line.