阿摩線上測驗
10. The visitor looks very suspicious hanging around by the bins. Let’s keep an____ eye on him.
(A) voluntary
(B) vulnerable
(C) violent
(D) vigilant
答案：登入後查看
統計： A(28), B(32), C(31), D(198), E(0) #3414303
統計： A(28), B(32), C(31), D(198), E(0) #3414303
