you are planning to spend your money have fun this week,better ___ it-you've got some big bills coming.空格填什么,为什么呢

问题描述:

you are planning to spend your money have fun this week,better ___ it-you've got some big bills coming.空格填什么,为什么呢

这句子格式看不懂额,是否写错了?
而且spend your money have fun 语法错误是的,我也觉得题目有问题