Oneday，aprofessor61．
问题详情：Oneday，aprofessor61．___(enter)theclassroomandaskedthestudentstotakeasurprisetest.As62．___（usual）handedouttheexampapers.63．__everyone’ssurprise.therewerenoquestions-justablackdotinthecenterofthepape...
问题详情：Oneday，aprofessor61．___(enter)theclassroomandaskedthestudentstotakeasurprisetest.As62．___（usual）handedouttheexampapers.63．__everyone’ssurprise.therewerenoquestions-justablackdotinthecenterofthepape...