Read Lines B I Understood Implying Steve Good

"If you read between the lines, you would have understood what he was implying."
"Steve isn't very good at reading between the lines. You have to tell him exactly what you want."
"Martha can read between the lines very well. She picks up on everything."

A: "Did you read chapter three for our English class?"
B: "Yeah. I think the author was indicating that he was supporting the war."
A: "Even though he said one thing, he meant another. You have to read between the lines to fully understand his stance."
B: "That might be true. I should go read it again."