Вставь в предложения he. образец: is sam happy? yes, he is. is jim cold? no, isn't. is this mam at home? yes, is. is his dad old? no, isn't. is the cook good? -- yes, is. в школу!

Is Jim cold? --- No, he isn't.
Is this mam at home? --- Yes, she is.
Is his dad old? --- No, he isn't.
Is the cook good? -- Yes, it is.