25. --School will soon be over. Can you recite the text now?

--I’m not sure, but I ________ it all this morning.

A．have read

B．was reading

C．read

D．had read

保税货物的基本程序是：合同备案、进出口报关、报核结案。其中加工贸易合同备案是指加工贸易企业持合法的加工贸易合同到进出境海关备案，申请保税并领取加工贸易登记手册或其他准予备案凭证的行为。