2024.04.04 英語が読める日と読めない日がある

I tried developer associate practce exam for the frist time yesterday. I scored fifty. It's worth than I thought. I expected sixty but I couldn't. I've booked the exam next Monday so I have to study harder though the range of the exam is covered by SAA I passed before.

And I found that there are days I can understand English easly or not. Is it solved by practicing English everyday?