根据图片提示，用合适的单词完成对话(每空一词，含缩略词)

72．A∶______your grandma doing?(图A)

B∶She is______．

73．A∶______you ride a horse last weekend?(图B)

B∶No，I didn’t．I______the chickens．

74．A∶______ ______in class，Amy．(图C)

B∶Sorry，Mr．Smith．

75．A∶When do you usually get up?(图D)

B∶I usually get up at______ ______ six．