Study the irregular verbs carefully and then write the past participle.
Keep kept kept - Know knew known - Leave left left
Lose lost lost - Make made made - Meet met met
Pay paid paid - Put put put - Read read read
Ring rang rung - Run ran run - Say said said
See saw seen - Sell. Sing sang sung - Shut shut shut
Sit sat sat - Sleep slept slept - Speak spoke spoken
Spend spent spent - Stand stood stood - Stick stuck stuck
Swim swam swum - Take took taken - Tell told told
Teach taught taught - Think thought thought - Understand understood understood
Wear wore worn - Win won won - Write wrote written