阿摩線上測驗
12. Websites _____ upload videos are very popular.
(A) that lets people
(B) who let people
(C) which let people
(D) where let people
答案：登入後查看
統計： A(9), B(1), C(121), D(51), E(0) #3195794
統計： A(9), B(1), C(121), D(51), E(0) #3195794
