一道高一英语选择题（请进！请详细说明！谢谢！）

选B

这句话这样分析
You can never imagine [what great trouble we have taken] dealing with the matter.

[]里的内容相当于插入语，可以去掉。 其实就是个感叹句。

去掉之后就是You can never imagine dealing with the matter.
imagine doing
deal with something

所以选B

what great trouble we have ___ the matter"是image的宾语从句，如果不做宾语，它的正常顺序应该是we (will take)/(have taken) great trouble (to deal with)/(dealing with) the matter，或者(To deal with)/(Dealing with) the matter (will take)/(has taken) us great trouble.
看出区别来了吗？不定式To deal with 有将来发生的意味，即去处理这件事会给我们带来很大麻烦。而本句中是表述已经发生的事，因此不用不定式to deal with 而是用动名词dealing with，故应该选B没错。
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