17. There/ isn’t /anybody / kind-hearted/as / your mother.
…………………………There isn't anybody as kind-hearted as your mother. …………………………………………………….
………………………………There is no better teacher in this school than Mr. John.……………………………………………….
………………………………Is this the biggest hat you have?……………………………………………….
20. It / expensive / I thought.
……………………………It is as expensive as I thought………………………………………………….