题目内容：

His trousers ____ too dirty. And this pair of trousers ___ too long for him. A is is B are are
C is are D are is

优质解答

答案：选D.His trousers _are_ too dirty.And this pair of trousers _is__ too long for him.解析：当单独用的时候,trousers代表的是复数概念,当前面有量词pair的时候,要根据pair的单复数来确定谓语动词的单复数,这...