Am I right? (usage of just)

[Vlad]

I need your help. Illustrate me by an example the word ‘just’. This is the seventh word in the second sentence.

How good is your English? This month you can check how just many English 'colour idioms' you know with this test by Alan Townend.

I have translated it into another phrase with similar sense. That it is:
In this month you are able to check how true you get right many English ‘colour idioms’ with the pop quiz by Alan Townend.

Is it right?

[Yankee]

[Vlad]

Thank you!
I'd like to someone say if I right or not in translation the phrase "This month you can check just how many English 'colour idioms' you know" into phrase "In this month you are able to check how exact you got many English ‘colour idioms’"?
I mark out the word 'just' and give some synonyms like these: exact, true, precise etc.

[Yankee]

Did you get the original sentence from this site? If so, perhaps the author will answer your question (and clarify the word order).
.

[Torsten]

[Vlad]

Yes it is. It is from letter which was addressed to me. It was written by Torsten. I'm terribly sorry I don't know who could help me. I try to understand it. I am Russian, just in case.
But I have received the answer to all appearance. You have written: 'The phrase 'just how many' basically means 'exactly how many' in that sentence'.
It means that 'just' is 'exactly'.
Thank you very much.

[Prezbucky]

In that particular case, yes, "just" means "exactly".

There are other meanings for "just", depending on the circumstance in which it's used.

The ruling was just.
-- In this case, "just" means this: proper, right, correct, lawful, valid.

Just give me your keys!
-- In this case, "just" is used to emphasize the urgency of the command. I suppose its actual meaning here is "now simply!".

He was just seventeen when he died.
-- Here, just = only
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