阿摩線上測驗
20. Unless we receive the shipment by tomorrow, we _____ the production schedule.
(A) have delayed
(B) had to delay
(C) will have to delay
(D) delay
答案：登入後查看
統計： A(0), B(3), C(10), D(0), E(0) #3895743
統計： A(0), B(3), C(10), D(0), E(0) #3895743
