My mom's a doctor. She (work) in a hospital. She (like) her job. Today's Saturday. She (not work) now - she (read) me a story.

Решение:

• My mom's a doctor. She works in a hospital. She likes her job. (Present Simple для фактов и регулярных действий).
• Today's Saturday. She is not working now - she is reading me a story. (Present Continuous для действий, происходящих прямо сейчас, или временных действий).