保税区内企业自用的生产、管理设备和自用合理数量的办公用品及其所需的维修零配件，生产用燃料，建设生产厂房、仓储设施所需的物资设备，予以免税。 ( )

To handle the financial crisis, the new government has to work more ______ with other nations,

especially the less-affected ones.[      ]

A. formally

B. smoothly

C. carefully

D. closely