Sentence:  The evaporative cooler had been moved to Granny 's room , and her door was <WSD>kept</WSD> shut ; so that the rest of the house stayed open , though there was a question as to whether it was hotter or cooler that way . 
Meaning of the word marked with <WSD> tags:  keep in a certain state, position, or activity; e.g., "keep clean"