Choose the right prefixes to complete the sentences.

Choose the correct option.

Jack [co|down|re|up]loaded a file and caught a computer virus.

I believe in [out|over|extra|sub]terrestrial life.

His [en|extra|out|anti]social behavior can be dangerous to humans.

You wrote the essay on the wrong topic! Your teacher will ask you to [re|co|out|en]write it.