Student A: I think everyone can do more to protect the environment. Student B: ______________Đoạn văn21/55Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best completes each of the following exchanges. Student A: I think everyone can do more to protect the environment. Student B: ______________ I wasn’t sure about that.You can say that again.I often do too.Yes, I don’t mind.Giải thíchChọn B