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Help the alien tourist write a postcard home. Select ALL the options that correctly complete the sentence to show purpose.
We traveled to Earth _____.
The correct answers are to study the strange humans and to steal all the Wi-Fi.
The infinitive of purpose is made with "to" plus the simple base form of the verb (like "study" or "steal"). We don't add "-ing" after this "to," and we don't use "for" with a base verb.