(2013·开封市高三二模) The power failure made ________ difficult for us to complete the task on time.
A．that B．it
C．one D．this
(2013·临沂市一模)Usually there might be a lot of accidents in the heavy fog.I happened to witness ________ this morning.
A．it B．those
C．each D．one
(2011·安徽高考)Surprisingly, Susan's beautiful hair reached below her knees and made ________ almost an overcoat for her.A．them B．her
C．itself D．herself
(2012·山东高考)When you are done with the book, just give it to Lucy or Helen or ________.
A．whoever B．whereverC．whatever D．however
(2013·浙江高考)Half of ________ surveyed in 16 countries say they go first to their closest friend to share their deepest wishes and darkest fears.
A．these B．some
C．ones D．those
(2010·全国卷Ⅱ)The doctor thought ________ would be good for you to have a holiday.
A．this B．that
C．one D．it
