You can’t imagine what great trouble they have _____ the problem _____.选项:a、to solve/being talked about b、 solving/ discussing c、 to solve/ to talk about d、 solving/being discussed 选哪个?为什么?请分析并翻译整句

You can’t imagine what great trouble they have _____ the problem _____.选项:a、to solve/being talked about b、 solving/ discussing c、 to solve/ to talk about d、 solving/being discussed 选哪个?为什么?请分析并翻译整句
You can’t imagine what great trouble they have _____ the problem _____.
选项:a、to solve/being talked about b、 solving/ discussing
c、 to solve/ to talk about d、 solving/being discussed
选哪个?为什么?请分析并翻译整句

You can’t imagine what great trouble they have _____ the problem _____.选项:a、to solve/being talked about b、 solving/ discussing c、 to solve/ to talk about d、 solving/being discussed 选哪个?为什么?请分析并翻译整句
d
they have是定语从句,修饰trouble,所以可以用括号括起来,
have trouble (in) sth/doing sth,而problem是被讨论
你无法想象他们在解决这个正被讨论的问题中有多大的麻烦

A,你不能想象他们有多么大的麻烦来解决正在被讨论的问题。

A You can’t imagine what great trouble they have 定语从句 to solve要解决的麻烦，而trouble就是正被讨论的问题being talked about