22. Mandy: I had morning classes with Janet. She sounded worried about her grades. Winnie:Janet Chen? But she’s getting A’s and B’s, isn’t she? Mandy: She’s been getting high grades since she attended college last year. Winnie: You see, _______ (A) she isn’t a very good student. (B) she hasn’t told me her grades yet. (C) she doesn’t like to talk about grades. (D) she shouldn’t worry about her grades.