7
1 write... writes.. writing
2. fly.. flies....flying
3 swim.. swims. swimming
4 dance.. dances.. dancing
5 study.. studies.. studying.
6 look...looks ...looking
7 hit.. hits.. hitting
8 watch.. watches... watching
9 wash.. washes... washing
10 go.. goes... going
11 ring..rings.. ringing
12 guess... guesses... guessing
13enter.. enters.. entering
14 match.. matches.. matching
15 sit.. sits.. sitting
16 ride.. rides.. riding
17 do... does.. doing