1
Past simple: understand, _______, understood, understanding
2
Gerund from: throw, threw, thrown, ______
3
Past participle: write, wrote, ______ writing
4
Gerund form: win won won ______
5
Past participle: think, thought, ______, thinking
6
Past participle: teach, taught, ________, teaching
7
Past simple: sweep, _____ swept, sweeping
8
Past participle: take, took, ______ taking
9
Past participle: wake, woke, _____, waking
10
Past simple: tell, ____ told, telling
11
Past participle: swim, swam, _______, swimming
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