You can watch the video and practise some exercices in the following links:
http://a4esl.org/q/h/9801/el-to-ing.html
http://english-zone.com/grammar/ger-inf01.html
http://a4esl.org/q/f/z/zz97mkm.htm
http://www.ego4u.com/en/cram-up/grammar/infinitive-gerund/exercises?03
http://www.really-learn-english.com/gerunds-and-infinitives-exercises.html#04
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