Pablo sell 700 paintings over the next month if he’s lucky! Verb: sell
Tense: future

Pablo will sell 700 paintings over the next month if he's lucky!

Explanation:

Given they said the tense is "Future"  I can infer the missing word is "Will".

  Hope this helps!

                         ~ Zohydro

do you have a picture of the cartoon?

answer: common sense was the pamphlet that thomas paine used to convince reluctant americans to abandon the goal of reconciling with britain and to accept that independence was the only option to preserve their liberty.