根据句意，选择恰当的动词形式补全句子--What is our granddaughter doing?--She to music.
A. listens
B. listen
C. is listening
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根据句意，选择恰当的动词形式补全句子--Is Helen clothes?--Yes, she.
A. washing; does
B. wash; is
C. washing; is
D. wash; does
请根据所图片内容，将所给语句匹配，组成意思通顺的对话
请从下列句子中选出使用了现在进行时态的句子。
A. He is putting up posters.
B. He drives a car.
C. She is guiding audiences.
D. They are cleaning up the stadium.
E. They don't place the flowers on the roads.
F. They are providing translation service.
下列税率形式中,与征税对象的价值量无关的是( )
A. 比例税率
B. 超额累进税率
C. 超率累进税率
D. 定额税率
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