I can't write because I'm not feeling well.
I can't write because I have many problems in my head.
I can't write because I forget my pen at home.
I can't write because I think too much.
I can't write because I'm late.

A, Congo

I can't write because I have a problem spelling.
I can't sleep today because I have pain in my back.
I can't speak because I have problem English.

N, Eritrea