阿摩線上測驗
20. As food delivery apps bring people convenience, they are also responsible for generating huge amounts of packaging waste, most of _________is plastic.
(A) which
(B) those
(C) it
(D) them
答案：登入後查看
統計： A(5), B(1), C(1), D(2), E(0) #2852356
統計： A(5), B(1), C(1), D(2), E(0) #2852356
