Here is the sentence:

Leroy has read travel books about every exotic country imaginable but refuses to ever visit in person. He worries that he might be stinged by a poisonous spider, bitten by a deadly snake, or convinced to order pickled monkey brains at a restaurant because he doesn't understand the language.

The second verb, might be stinged, is the problem. As you know, the verb requires the past participle because of the auxiliary verbs might and be. Might be stung is the correct form.

Verb Simple Present Simple Past Past Participle
sting sting(s) stung stung

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