回复：谢谢老师回复！4月底申请的，明天到期，不知何时能够批准。

If your EAD application is pending for > 90 days, you can call USCIS or go to the USCIS local office to push them and thus, they will approve it in a few days. If less that 90 days, you can push tehm, but they may not care about you. But it does not hurt you to push them, any way.