In the ten days New Year's Day revelers within the Fifth Ring Road to set off firecrack

问题补充：

In the ten days New Years Day, revelers within the Fifth Ring Road to set off firecrackers from 7 a.m. to midnight.

A. following, are allowed

B. followed, allow

C. following, allowing

D. followed, have allowed

答案：

(答案→)A. following, are allowed

B. followed, allow

C. following, allowing

D. followed, have allowed

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