Mrs. Black's mother was ill in bed three days ago . So she had to go and look after her .

    Before she left , she said to her husband , “I must tell you where everything is , or you don't know what to do , but my train is leaving in half an hour's time and I must go now .”

    “Don't worry ,” Mr Black said , “ I can look after myself .” In fact , he could not do anything without his wife . But when his wife came back the next day , she did not have to wash any plates because he had his metals in restaurants .