i kept the windows open whole night.
I was kept waiting by them.
The king kept the scepter out of his sinister greed.
he was being waited by him
In some cases, "kept" can function as a linking verb to connect the subject of the sentence with its complement. For example, in the sentence "She kept the book on the shelf," "kept" links "She" with the state of the book being on the shelf.
The past tense sentence with "keep" would be: She kept the book on the shelf.
The fruits became fester after they were kept in the open. This is the example of fester in a sentence.
Befor you asked, the answer was a well-kept secret. The quaint, cozy inn was rather well-kept.
My dog kept being Din.
he kept balthering about his vacation
When I was at the circus a mime kept mimicing me
His resilience kept him out of bankruptcy.
"kept on a sunny windowsill" is the participial phrase in the sentence. It describes where the violet was placed.