来自葛恒清的问题
【Ioftengoonholidaywithmyparents_____summer.A.onB.atC.inD.of】
Ioftengoonholidaywithmyparents_____summer.
A.on B.at C.in D.of


【Ioftengoonholidaywithmyparents_____summer.A.onB.atC.inD.of】
Ioftengoonholidaywithmyparents_____summer.
A.on B.at C.in D.of
C