— You study ______ hard _______ you’re sure to pass the exam.　

— Thank you for saying so.

A. enough… to 　　 　 B. as…as　　　 　　　 C. so…that

A. enough good　　  B. good enough　　  C. well enough　　   D. enough well

A. enough old　　  B. old enough　　　　 C. enough older　　   D. older enough

The room isn't _______ for so many people.

A. enough big　　

　　B. big enough

　　 C. so big　　

D. too big

A. enough well   　　　　 B.good enough     C.enough better　　　　　　 D.well enough