Hi, #1. Since accent is a countable noun, we need 'a' for both heavy accent and heavier accent . #2.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Hoa ThaiHi,
#1. Since accent is a countable noun, we need 'a' for both heavy accent and heavier accent.
#2. I prefer 'hesitancy in responding'.
Besides the above comments, both sentences have a run-on problem. There are more than one way to reword them; and here is my suggestion:
Student1 had a heavy accent