Ho to say this in japanese? (no google!)?

Question:

Hi,
I need help from native.
How to say in japanese this:

"Miki said you are stupid, because, once, Miki was going to took X rays, and Akira asked to her if she had catch a cold, and she said there's no need to do x ray when you catch a cold!"

How to say it?

Thanks in advance!

Answer:

"Miki said you are stupid, because, once, Miki was going to took(TAKE) X rays, and Akira asked to(←No Need) her if she had catch(caught) a cold, and she said there's no need to do(take) x ray when you catch a cold!"

Here's my translation (for colloquial):
みきは、｢あんたばかね！｣ と いってましたね。
というのは、あるひ みきがレントゲンを とろうとして いたときに、
あきらが、みきに ｢かぜでもひいたのか｣ なんて きいてしまって。。
それで、みきは ｢かぜひいて、レントゲンなんかとらないわよ！｣ と いったわけです。

------ I can see that words as "なぜなら" are strange,,,
Right. Very rare in colloquial use. It's only used when you give some logical explanation. (as a professor/ a detective... but mostly in written)
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