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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(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

(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.
答案:whether