银行批准了我们的抵押贷款申请，现在我们可以买房了。

The bank approved our ___mortgage application, so now we can buy the house.

他们必须签署抵押贷款文件才能拿到购房款。

They had to sign the ___mortgages to receive the money for the house.

他们计划抵押公寓来支付孩子的大学学费。

They plan to ___mortgage their apartment to pay for their child's college tuition.