A．Enforcing laws contrelling navigation, shipping, immigration and fishing.
B．Enforcing laws affecting the privately - owned bests in the U. S.
C．Searching for missing beats and rescuing people.
D．Training people to good swimmers along the beac

A．She baked the cake herself.
B．She bought it from the shop.
C．She wants the man to bake it for her.
D．The bakery baked the cak