Mike is the tallest boy in our class.（同义句）

Mike is the tallest boy in our class.（同义句）
Mike is ___ than ___ ___ boy in our class.
I think game shows are meaningless.（否定句）
I ___think game shows ___ meaningless.
It's twenty （minutes'bike） ride to our school form here.（对括号括住的部分提问）
___ ___is it to our school from here.
并说明为什么这样改