The villagers have already known （ ） we'll do is to rebuild the bridge.
（A）this
（B）that
（C）what
（D）which
It is still under discussion （ ） the old bus station should be replaced with a modern hotel or not.
（A）whether
（B）when
（C）which
（D）where
（ ） I cannot understand is （ ） she wants to resign her present job.
（A）What; why
（B）Which; how
（C）That; why
（D）What; which
