Answer:
Who keeps the ocean clean?
I go around a yard but do not move. What am I?
I am a fruit with seed on the outside. What am I?
Tool of thief, toy of queen. Always used to be unseen. Sign of joy, sign of sorrow. Giving all likeness borrowed.
What has many teeth but can't bite?
I met a man on the London bridge, he tipped his hat and drew his name, in this riddle I told you his name. What is it?