阿摩線上測驗
47. What does “it” refer to in the first paragraph?
(A) sensor
(B) sleep
(C) light
(D) clock
答案：登入後查看
統計： A(1), B(140), C(60), D(2), E(0) #2027626
統計： A(1), B(140), C(60), D(2), E(0) #2027626
