按要求改写句子.(每空一词)(英语）
1.His father is old.(用her、father改成比较级形式）
His father is_____ _____ her father.
2.Tom studies well.（用who改成比较级问句形式）
____ ____ ____,Tom or Jim?
3.I saw a short man behind me.（改成一般疑问句,并做肯定回答）
—_____ _____ _____a_____ _____ _____ _____?
—Yes,______ _____.