Give some situations where it was difficult for you to communicate over the phone. How were you able to solve them? In my case, I'm not a good speaker, so I cannot explain what I want to talk. Sometimes I cannot think of the right word, it is the biggest issue for me. this issue is getting serious as I'm getting older. So, to solve this issue, I make some scenarios for the call and write down on my note before to make a call. This way can reducing the difficult for communicate over the phone.

Hello, Drew!
Excellent work with your homework! Keep up the excellent work!
~Teacher Selene

In my case, I'm not a good speaker, so I cannot explain what I want to talk.
>>CORRECT 
Sometimes I cannot think of the right word, it is the biggest issue for me.
>>The biggest issue for me is trying to find the right word. 
OR
>>I cannot think of the right word to use, which is the biggest issue for me. 
this issue is getting serious as I'm getting older.
>>This issue is as serious as me getting older. 
So, to solve this issue, I make some scenarios for the call and write down on my note before to make a call.
>>To solve this problem, I imagine scenarios for the call and take notes before making the actual call. 
This way can reducing the difficult for communicate over the phone.
>>This way, I can lessen the difficulty when I communicate over the phone.