Final answer:
To translate the sentences into Spanish, 'I know a student from Boston' is 'Yo conozco a un estudiante de Boston' and 'He knows how to speak Spanish very well' is 'Él sabe hablar español muy bien'
Step-by-step explanation:
To translate the given sentences into Spanish:
- I know a student from Boston - Yo conozco a un estudiante de Boston.
- He knows how to speak Spanish very well - Él sabe hablar español muy bien.
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