Do you know the English expression to know (something) inside out? Read the conversation below. Can you guess the meaning?
Terry: I need help with my science homework.
Gill: Why don’t you ask Sarah? She knows the subject inside out. She has a degree in chemistry.
Does it mean:
a) know something very well
b) know a little about something
c) not know anything
The answer is below! ↓
Answer: a) know something very well