回复：另外，我老公申请绿卡的140已经批了，正在等候485窗口，这个期间他出境安全吗？

If he does not file I-485 yet, he will be fine to get the TN I-94 when he returns. If you does not file your I-485 yet, you will be fine to get the TD I-94. If he and you have filed I-485, both you have to use AP for the travel outside US, no more gtting TN or TD I-94.