Если сверху был какой-то текст - тогда эти ответы брать нельзя, т.к. исполнителей (whom) я просто выдумываю
1) They have been washed and ironed by his mother.
2) they have been hanged by father.
3) they have been raked up by schoolchildren
4) they have been laid by waiters.
5) they have been brought by workers.