⒈Manatees are playful and aggressive.(同义句) Manatees are _____ playful ______ aggressive ⒉To save the patients is my job.(同义句) My job is ______ _______ the patients . ⒊Manatees are animals who are dying out.(同义句) Manatees are _________ _______. ⒋Animals that are kept in the tiny cages can hardly move, ______ _______?