阿摩線上測驗
6. Over the years, dust began to _____ on the old bookshelf, making it look dirty and neglected.
(A) accumulate
(B) negotiate
(C) immigrate
(D) participate
答案：登入後查看
統計： A(175), B(26), C(42), D(20), E(0) #3430642
統計： A(175), B(26), C(42), D(20), E(0) #3430642
