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Theteachertoldthepupilstositupinclassandlistentohimcarefully.A.sirectB.directlyC.straightD.straightly选哪个?为什么?

题目详情
The teacher told the pupils to sit up _in class and listen to him carefully.
A.sirect B.directlyC.straightD.straightly
选哪个?为什么?
▼优质解答
答案和解析
C.straight
straight 在此做副词