选词填空。
( fly flew homework cleaned clean visited was cooked had have birthday saw swam )
I often do ________ and ________ my room on Saturday. But last Saturday I ________ my grandparents. Because last Saturday ________ my grandma’s _________. We _______ kites near the river. We ________ some trees and flowers at the river. Some ducks ______ in the river. It was beautiful. My mother ________ big meals for us. I ________ a good time last Saturday.