He is____is known as a hacker — he likes to show off on the Internet and attack websites.
A. who B. what C. that D. which
Thanks!
sorry to ignore the line.
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Something seems wrong with your sentence.
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Hi, MM
Do you think that he is what is known as a hacker is wrong ?
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No, but what goes in the other space?
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I presume nothing…
He likes to show off on the Internet and attack websites is a standalone sentence in my book.
Do you think it would be better to write He likes showing off on the Internet and attacking websites ?
I’d say that’s basically six of one and half a dozen of the other, Alex. :lol:
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Gotcha 
sorry. It’s like this:
He is____is known as a hacker — he likes to show off on the Internet and attack websites.
A. who B. what C. that D. which
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Ah ha! But an m-dash is written as two hyphens (and of course, not dots), vaok, with no spaces:
He is_what_is known as a hacker–he likes to show off on the Internet and attack websites.
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Thank you MM, but a lot of people choose" Who", I don’t know how to explain why it is not right. Can you help me?
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Because it is a definition. What is a hacker? It is someone who likes to show off on the Internet and attack websites.
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