When it comes to regular verbs, the way to create past tense is to add -ed (if the verb ends with a consonant), or -d (if the verb ends with a vowel). So, the verb smile ends in e, which means that you only need to add -d to create past tense. The correct answer is: Mona Lisa smiled mysteriously.
I think... The edict upheld Protestants in freedom of conscience and permitted them to hold public worship in many parts of the kingdom, though not in Paris.
