问题补充:
Order came that all the army supply to the front before daybreak.
A. be sent
B. should send
C. were sent
D. should have sent
答案:
(答案→)A. be sent
B. should send
C. were sent
D. should have sent
解析:考查同位语从句和虚拟语气。名词order后面的同位语从句要使用“should+动词原形:构成的虚拟语气,should可以省略。句意:命令传来,所有的供应物资都要在天亮之前被送到前线。故A正确。