English speaking test.

Yesterday,I took part in an English speaking test.In the beginning, I got an article and asked read it immediately.Of caurse(course),I had(was) a little nervous.But luckly,I did it without big wrong(without any big mistakes - even better is "without any serious mistakes").<Question1:"wrong"can count or not?("wrong"可数吗？是"big wrong"还是“a big wrong"/"big wrongs"?) Questinon2:If it can count,"I did it without a big wrong"and "I did it without big wrongs"has anything different? Or,can I translate the first sentence to"我一个大错误也没犯”,and the second one "我没有犯很多大错误".And the second one means "I have some/few mistakes"? If like that,it's not my real intention.>

Question 1: Wrong isn't countable. It is not correct to say "three wrongs" instead say "three mistakes". Wrong does have a plural though but the only place I think it is used is in the idiom/saying "two wrongs don't make a right".

And then,the examiner ,one of three examiners,an (a - "an" is only used when a vowel sound comes next)  woman,asked me three questions, and I answered it (them -" it" would be right if there was only one question, "it" implies there is only one thing) in very easy(simple) words.Because I think that compared with the beautiful answer that out of your ability , a fluent answer is more suitable!My answers may be not (not be) very nice ,but it hadn't (they had had no) mistakes and fluently (was fluent).
Oh,if that woman teacher had turned up her voices (been louder),I would have done it well , and I think I am not confident and quiet enough.And about those questions ,I already remember it not very clearly! (On the topic of those questions, I don't remember them very clearly - or more simply: "I don't remember the questions very clearly")
It's really a good experience!Wish me get a good result! (Wish me luck with my result)
Thank you for your reading!