In this organization. a number of volunteers ____students and they often help children and old people.( ?。?/h1>
【考點(diǎn)】be動(dòng)詞.
【答案】B
【解答】
【點(diǎn)評(píng)】
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發(fā)布:2024/5/27 14:0:0組卷:27引用:1難度:0.7
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