Determiners

I think I have to use one of the determiners that identify things. Then, can I use the/ those/ such/ these for the blank? If not, why ?

In many languages, the spelling of words is very similar to their pronunciation. In English, however,this is often not true and this can cause great problems for language learners. Another difficulty that language learners encounter is that one word can have more than one meaning. The word ‘bow’, for example, has at least two completely different meanings and it can also be pronounced in two different ways.
One solution to ________problems is to use the dictionary.