题目

—You’ve given us a wonderful Chinese dinner, Mrs．Wang． —       .     A．0h，I’m afraid I didn’t cook very well    B．I’m glad you enjoyed it     C．Come again when you are free           D．It’s not necessary for you to say so   答案：B—Have you finished writing the letter ________?—Not ________.A. just； already B. already； justC. ever； just D. yet； yet