Choose the correct words to complete the sentences. Here are some hints from the website http://www.grammar-quizzes.com/emphasis.html#even
Even places emphasis on a particular part of the sentence expressing an exceptional, surprising, or unexpected aspect.
Even though (like though) expresses an exceptional existing situation that is contrary to what one would expect. Even adds emphasis to the though-clause.
Even if (like if) expresses an exceptional, extraordinary, or unexpected condition that does not affect the truth of the main clause. Even adds emphasis to the if-clause. The effect of an even if clause is that there is no condition.