【单选题】How often is the bus scheduled to pass their stop
A.Every 21 minutes.
B.Every hour.
C.Every 30 minutes.
D.Every 9 minutes.
【单选题】How often is the bus scheduled to pass their stop
A.Every 21 minutes.
B.Every hour.
C.Every 30 minutes.
D.Every 9 minutes.
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