The reason why it is so polluted here is ______ people here don't pay any attention to environment protection．
A. why B．because C．that D．since
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Five kilometers ______ a long distance for a five-year-old boy to run.
A. are B．be C．is D．would be
______ succeed in your work．
A. You may B．You can C．May you D．Can you
Every man and every woman ______ (be)satisfied with the solution．
I was disappointed with the film. I had expected ______ to be much better．
A. that B．this C．one D．it
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