hey !

4.- In the periodic table, the rest of metals aren't as the heaviest as this is.

5.- These exercise I am doing are extremely the most difficult.

6.- I have never met such a the shyest person as Tom.

7.- In the market you can't find a material as the most flexible as this.

8.- The book I am reading is very the most interesting.

9.- This is the first time I have seen such the biggest animal. (je ne suis pas sûre de cette phrase là, désolée..)

10.- In my family, nobody sings as worst as me.

11.- John is very the most reliable friend.

bonne journée :)