.—What is Mary doing in her room with something long in her hand —What is Mary doing in her room with something long in her hand —Granny ,I already told you she had a mop and _________ the floor .A .was mopping B .mopped C .had mopped D .would

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.—What is Mary doing in her room with something long in her hand
—What is Mary doing in her room with something long in her hand
—Granny ,I already told you she had a mop and _________ the floor .
A .was mopping B .mopped C .had mopped D .would mop

A.正在进行的动作,用-ing,且又是间接引语,已有“told”,故用过去进行时

a,正在擦地板,正在发生的动作。

选A