Write the past participles of the following verbs
I. Write the past participles of the following verbs.
1. sleep -> _____________ 2. move -> ____________
3. open -> _____________ 4. know -> ____________
5. find -> _____________ 6. be -> ____________
7. clean -> _____________ 8. drive -> ____________
9. take -> _____________ 10. arrive -> ____________