5 'Knock' Phrasal Verbs - knock up/out/off/over...

source: English Lessons with Adam    2013年3月3日
http://www.engvid.com Need a knockout lesson? This is it. If you've wondered why girls get knocked up, men get knocked out, or Prada bags get knocked off, this phrasal verb lesson will help you out. After watching the lesson, take the quiz here: http://www.engvid.com/phrasal-verbs-k...

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