阿摩線上測驗
21. My late grandfather _____ for more than 20 years, and he passed away because of lung cancer.
(A) smoking
(B) had smoked
(C) has smoked
(D) has been smoking
答案：登入後查看
統計： A(5), B(91), C(23), D(23), E(0) #3426350
統計： A(5), B(91), C(23), D(23), E(0) #3426350
