问题标题:
Thereisapen,apencil,arulerandtwo___(小刀)inthepencilcase.
问题描述:
There is a pen,a pencil,a ruler and two___(小刀)in the pencil case.
齐飞回答:
答案:knives.knife小刀,可数名词,此处是"两把小刀",所以要用名词复数,故填knives.
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