【C15】A．theirB．itsC．thoseD．that

【C10】A．theirB．theC．thoseD．these

【C15】______A．whyB．whatC．whoseD．that

【C15】A．unlessB．so thatC．provided thatD．in order that

【C9】A．ThereB．ThisC．ThoseD．That

【C16】A．ThereB．ThisC．ThoseD．That

This is an article that______.A. those unexpected