阿摩線上測驗
5. Before they went into the water, the divers checked their breathing _______ to ensure safety.
(A) apparel
(B) aperture
(C) apparatus
(D) apprentice
答案：登入後查看
統計： A(57), B(71), C(227), D(59), E(0) #3128932
統計： A(57), B(71), C(227), D(59), E(0) #3128932
