The ability to conceal themselves by camouflage _________ some otherwise defenseless animals to survive.
(A)enable (B)enables (C)has been able to (D)have enabled
林湘凌 小六下 (2014/12/16) The ability (to conceal themselves by camouflage) _________ some otherwise defenseless animals to survive. to conceal themselves by camouflage.....觀看完整全文,請先登入