---Joe,wouldyouliketoplayvolleyballwithusthisafternoon?---Sorry,Ineedtopracticeplayingpiano.()A.a;theB.the;aC.不填,aD.不填,the
---Joe,would you like to play _____ volleyball with us this afternoon?
---Sorry,I need to practice playing ______ piano.( )
A. a; the
B. the; a
C. 不填,a
D. 不填,the
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