几道英语小问题,请高手指教,并做一些简单说明

几道英语小问题,请高手指教,并做一些简单说明
21.The planets are so far away that it is impossible ____ in miles.
A.that we measure it
B.to us to measure them
C.for us to measure them
D.measuring them
22.Only by diligence and honesty ____.
A.one can succeed in life
B.can one succeed in life
C.one can be succeeded in life
D.can one be succeeded in life
23.You ____ yesterday if you were really serious about the job.
A.ought to come
B.ought to have come
C.ought have come
D.ought come
24.These are common materials ____ we are all familiar.
A.about which
B.of which
C.with which
D.to which
25.If the whole program ____ beforehand,a great deal of time and money would have been lost.
A.was not planned
B.were not planned
C.would not be planned
D.had not been planned