他没有签字登记，就是说，我没有他签过字的记录。
He didn't sign the register, that is to say, I've no record that he ever did.
我想告知您，还有一些同学仍然没有交上您签过字的试卷。
I would like to inform you that some students are still missing handing in their quizzes and exams with your signature.
不过我们还必须在那天交一份家长签过字的拼写测试，不然就不能参加那个活动。
We were also told to bring our spelling test signed by a parent, and if we didn't, the teacher warned, we would sit out from the activities.
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