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【題目】In the evening we can see (billion) of stars in the shy.

【答案】billions
【解析】句意:晚上我們可以看見天空中有數(shù)十億顆星星。billion十億,構(gòu)成短語:billions of數(shù)十億的;根據(jù)空格后的of,所以答案是billions。

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