阿摩線上測驗
23. Each of the safety checklists _____ a space for signatures.
(A) include
(B) includes
(C) are including
(D) have include
答案：登入後查看
統計： A(4), B(16), C(5), D(1), E(0) #3895746
統計： A(4), B(16), C(5), D(1), E(0) #3895746
