阿摩線上測驗
10. People do not know the importance of health ______ they have lost it.
(A) while
(B) as
(C) until
(D) whereas
答案：登入後查看
統計： A(33), B(17), C(550), D(23), E(0) #1709926
統計： A(33), B(17), C(550), D(23), E(0) #1709926
