过去式,过去分词和ING形式,

1.chat chat chatting
2.carried carried carrying
3.set set setting
4.bit bidden bidding
5.win won winning
6.lost lost losing
7.bet bet betting
8.burnt burnt burning
9.depended depended depending
10.forgot forgotten forgotting
11.fed fed feeding
12.rebuilt rebuilt rebuilding
13.rewrote rewritten rewtiting
14.spit spit spitting
15.fit fit fitting
16.came come coming
17.showed showed showing