阿摩線上測驗
26 I____ to contact a friend living in Hualien for the past few days, but I still cannot reach him.
(A) had tried
(B) have been trying
(C) had been trying
(D) tried
答案：登入後查看
統計： A(50), B(131), C(48), D(11), E(0) #1262179
統計： A(50), B(131), C(48), D(11), E(0) #1262179
