Big cities are usually c_______ in the main streets.There are people here and there.
问题描述:
Big cities are usually c_______ in the main streets.There are people here and there.
答
crowded
答
crowding 拥挤的。应该不能用crowded,因为不是过去式啊,是时时在发生的事啊,所以就用现在时就行,而,它是动词前面又有are 作为be动词,那它应该加ing
答
crowded 拥挤的
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