52单词网 > 高中英语 > 高中英语题库 > 用适当的连接代词或连接副词填空 The problem is they have run out of food.

用适当的连接代词或连接副词填空 The problem is they have run out of food.

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用适当的连接代词或连接副词填空 The problem is they have run out of food.

(同位语从句)用适当的连接代词或连接副词填空

The problem is ________ they have run out of food.

试题答案

答案:whether