【C6】A．concernedB．itselfC．availableD．oneself

A．Exposing oneself to the target culture.B．Attending regularly a good language program

【C6】A．thisB．itselfC．itD．that

【C5】A．themselvesB．herselfC．itselfD．oneself

【C14】A．concernedB．concerningC．being concernedD．to be concerned

This is _____ the most difficult job I have ever tackled.A:by rightsB:by itselfC:by one

He wrote to me ______ a business arrangement.A．concernedB．conceptionC．concerningD．revealin