阿摩線上測驗
30 Unless we install more speed cameras, the speed limits on this stretch of road will be difficult to _____.
(A) release
(B) enforce
(C) violate
(D) register
答案：登入後查看
統計： A(196), B(884), C(361), D(188), E(0) #3118593
統計： A(196), B(884), C(361), D(188), E(0) #3118593
