阿摩線上測驗
31 Coast Guard crew members spend many hundreds of thousands of hours on _______ missions, radio operations,
training or maintenance work each year.
(A) surf and turf
(B) safe and green
(C) search and rescue
(D) fish and hunt
答案：登入後查看
統計： A(8), B(13), C(128), D(3), E(0) #2939313
統計： A(8), B(13), C(128), D(3), E(0) #2939313
