We rushed to the football court, only to see a sign _____ into the ground reading PERIODIC MAINTENANCE (定期维修).
A.knocked | B.knocking | C.to be knocked | D.being knocked |
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We rushed to the football court, only to see a sign _____ into the ground reading PERIODIC MAINTENANCE (定期维修).
A.knocked | B.knocking | C.to be knocked | D.being knocked |