阿摩線上測驗
18. Before _____ the contract, please make sure you read the fine print.
(A) sign
(B) signed
(C) signing
(D) signs
答案：登入後查看
統計： A(3), B(3), C(17), D(0), E(0) #3895741
統計： A(3), B(3), C(17), D(0), E(0) #3895741
