—What do you think about smoking?
—Well，just as someone puts ________，smoking kills.
A．this B．it C．that D．one
(2013·江西南昌高三调研)Mr Blark，________ who we all admire，is a kind but strict teacher.
A．the one B．it C．one D．as
(2013·福州质检)Mary's parents admitted that she was always contrary to a wish of ________.
A．them B．theirs
C．their D．themselves
(2013·济宁一中高考模拟)—Have you got any books on English grammar？I'd like to borrow ________.
—Yes，here you are.But you must return it by Friday.
A．it B．one C．some D．any
Tom's mother kept telling him that he should work harder，but ________ didn't help.
A．he B．which C．it D．none
(2013·北京西城区高三期末)Being more realistic，the elderly have learned to focus on things that make them happy and let go of ________ that don't.
A．them B．it C．that D．those
