根据句意,用所给单词的正确形式填空。 – What are those? — They are ________ (knife). – Is this bag ________ (she)? – No, it’s Mrs. Liu’s. -- How much ________ (be) this pair of shoes? – It’s 120 yuan. The girl ________ (have) a brown cat. Its name is Kitty. Help ________ (you) to some meat, kids!