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The boy is ________ to go to school.

[　　]

A．enough old　　　B．enough young　　　C．old enough

The boy is not _________ to go to school.

A．enough old

B．old enough

C．younger enough

D．enough younger

The boy is not old enough to go to school.

[　　]

The boy is ______ to go to school．

　　A．enough old　　

B．old enough

　　C．enough young

D．young enough

The boy is ______to go to school ．

A． enough old         B．enough young  

C． old enough         D．young enough