◎ 题干
—What about going to the South Lake for a picnic next weekend?
— OK. But I'm not sure _______ it will rain.
[     ]
A. why          
B. where      
C. when            
D. whether
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—What about going to the South Lake for a picnic next weekend?—OK. But I'm not sure _______ it will rain.[ ]A. whyB. where C. whenD. whether…”主要考查了你对  【宾语从句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。