Answer:
You can use "they." It depends how you are going to build your sentence!
It is a fragment sentence.
Answer:
"my mother's ‘limited' English"
Explanation:
Looking at the write up closely, it can be seen that the author's major intention is to put forward the fact that his/her mother's limited English impoverished her ability to communicate her thoughts coherently.
Hence, the phrase that best helps the reader to identify the author's purpose must be the phrase; "my mother's ‘limited' English".
