1. knocked 2. is dancing, can dance 3. rain, have no 4. are gathering, gather 5. is boiling, boils 6. speaks, could not understand 7. walking, walk, am hurrying, have to meet, does not like 8. saw, looked, had not seen 9. heard, blew 10. recognized, think, can not remember 11. said, is making 12. is resting, resting