YOU SAID:
hello i had a test two days ago
INTO JAPANESE
こんにちは私は2日前にテストをした
BACK INTO ENGLISH
Hi I did the test two days ago
INTO JAPANESE
こんにちは、私は2日前にテストをしました
BACK INTO ENGLISH
Hi, I did the test 2 days ago
INTO JAPANESE
こんにちは、私は2日前にテストをしました
BACK INTO ENGLISH
Hi, I did the test 2 days ago
That didn't even make that much sense in English.