阿摩線上測驗
31. If we fail to ______ our claims, the supplier will not be aware of the problem.
(A) assert
(B) assertion
(C) asserting
(D) asserted
答案：登入後查看
統計： A(125), B(11), C(26), D(11), E(0) #3887968
統計： A(125), B(11), C(26), D(11), E(0) #3887968
