All of his or her coworkers are busy all day long, but they don't know know what they are busy for.
#All of his or her coworkers are busy all day long, but they don't konw what they are busy for.
#All of his or her coworkers are busy all day long, but they don't konw what they are busy for.
#All of his or her coworkers are busy all day long, but they don't konw what they are busy for.