in actual test you will not be able to proceed w/o answering so you cannot leave questions in b/w but it may be a case that you are not able to finish off all the 37questions in the stipulated 75mins.
by the info given 33 questions attempted in 1hr looks fine but if you actually just read the question and moved to next question thereby only spending time in solving 24questions then you need to work on your speed
One more thing to consider is the questions numbers which was attempted
were they in sequence say the 1st 33 questions or random or middle 33 questions or last 33 questions
in OG difficulty level increases as you move from start to end of a section