完成对话,每空一词. A : Hi, Betty!  What's your favorite______1____? B : My favorite? I____2______ history best. A: lnteresting? It's boring.  P. E. is my_____3_____. Mr Smith____4______ a good teacher. ______5____ your history teacher? B: Mr Brown. He's very funny. A : When do you have the____6______ class? B : I have history____7______ Tuesday and Thursday. A: You don't have history on Monday, Wednesday and Friday? B: No,I ____8______ math. A: Is Mrs Black your math____9______? A:Yes, she is. Math is difficult. I don't like it.____10______ Mrs Black is a good teacher.