阿摩線上測驗
31 Firefighters do not just fight fires. They also ______ fires to see how they were caused.
(A)encourage
(B)investigate
(C)abuse
(D)overwhelm
答案：登入後查看
統計： A(68), B(594), C(100), D(76), E(0) #1609656
統計： A(68), B(594), C(100), D(76), E(0) #1609656
