I can't stand the terrible noise ______ she is crying loudly．
A. It B．which C．this D．that
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I couldn't catch ______ because of the noise outside.
A. what did the speaker say
B. what said the speaker
C. what was the speaker saying
D. what the speaker was saying
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
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
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