Apart from the punctuation errors, can you spot the homophone error on this post?
It could be a typo, but for examiners, this kind of mistake stands out like a sore thumb.
(native speakers make these mistakes ALL THE TIME and it drives examiners NUTS).
Say each word out loud - do they sound the same to you? If not, it could be causing problems in the Listening test, because of the sound-spelling differences:
Homophones are the source/sauce of many jokes: