this pair of shoes 是单数还是复数?

this pair of shoes 是单数还是复数? this pair of glasses是复数还是单数 this pair of trousers（shoes）用单数还是复数· this is a pair of shoes 后面的谓语用单数还是复数? This pair of shoes后面谓语动词用单数还是复数? this pair of trousers作主语是单数还是复数 This pair of trousers____(be a pair of shoes看作单数还是复数 A pair of shoes的谓语系单数还是复数 英语老师来.the pair of shoes接下来的谓语是单数还是复数? a pair of_________(shoes,trousers.) 后面是复数还是单数? a pair of shoes 这里的shoes应用单数还是复数? pair是单数还是复数?