2(a)

infinitive

1 begin 2 come 3 drink 4 drive 5 give 6 know 7 put 8 se(i)t 9 swim 10 wake(up) 11 win 12 write

past

1 began 2 came 3 drank 4 drove 5 gave 6 knew 7 put 8 se(a)t 9 swam

10 woke 11 won 12 wrote