There are some words in this exercise that you have not yet run into. But this is just like reading the Bible in Greek. You are always running into words you have not yet learned. What I would like you to try is to puzzle out the sentence. Look for words you do know. Identify the verb. You may not have learned the translation of the lemma yet, but you may be able to identify the person and number...and be able to connect that to the proper answer.
Give this a try, and then maybe send me an email or a WhatsApp letter to let me know how you did on this exercise.
Match up the Greek sentence on the left with the English translation on the right.
ἀδελφὸς βλέπει ἄνθρωπον.