For an obligation to pay money, the creditor may request the debtor to pay in legal tender at the place of actual performance, unless otherwise provided by the law or agreed by the parties. 以支付金钱为内容的债，除法律另有规定或者当事人另有约定外，债权人可以请求债务人以实际履行地的法定货币履行。 Where an obligation has multiple subject matters, only one of which the debtor is required to perform, the debtor shall have the choice,unless otherwise provided by the law,agreed by the parties, or required by the usage of trade. 标的有多项而债务人只需履行其中一项的，债务人享有选择权；但是，法律另有规定、当事人另有约定或者另有交易习惯的除外。 If the party having the choice fails to exercise the choice within the agreed time limit or the time limit for performance,and fails to do so within a reasonable time limit after a demand, the choice shall pass to the other party. 享有选择权的当事人在约定期限内或者履行期限届满未作选择，经催告后在合理期限内仍未选择的，选择权转移至对方。