【C5】A．onB．toC．aboutD．of

He owed his success to luck more than（)capacity.A onB toC inD at

Jamie wants to speak to me private.A、onB、toC、in

A．onB．toC．inD．with

Seldom did we realize that many of our hair problems______what we eat.A．rely onB．refer toC

【C5】A．backB．asideC．aboutD．off

The famous actor is familiar______every American, young and old.A．withB．toC．aboutD．on