公文处理工作的时限性，表现在提高机关工作效率的重要环节。()

卡片式登记的优点是容易保存，适宜按事件顺序进行登记。() 点击查看答案&解析

The schoolmaster looked at the broken glass on the floor then looked at the boy and said to him, “You () the window.”

A、shouldn’t break
B、mustn’t break
C、can’t have broken
D、shouldn’t have broken

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