I have already failed in those exams, mostly because my preparation was not enough
准备不充分考试没考好
The part of it that worried me the most was...
令我最担心的部分是...
The best way that I could
尽力
I chose to dedicate 6 to 7 hours each day
每天拿出6-7个小时
Put the accent on
重点加强
I declined several invitations and dates for that
为了学习推了约会
SH0987
积极改变