完整的题目：Today, water supply has become an extremely serious matter in many countries. They will be in（    ）【big/large/huge/vast】trouble if they don't take action.

答案书是用的big

但之前在其他书上有看到huge有表达重大紧急事件的意思。

比如：hugeproblem/question，此处会不会用huge修饰trouble比较好呢？还是两者皆

可？