His trousers are (black).对括号里提问

Those are his trousers.(对his trousers提问） His white trousers are long.(对His提问） His trousers are (black).对括号里提问 These are his trousers.这只是回答,提问应该是什么? His trousers are on the bed.Mine __ hehind the door.应该填is 还是 are? His trousers ____ too dirty. And this pair of trousers ___ too long for him. A is is B are areC is are D are is these trousers are ____. a.my b.your c.her d.his his trousers are of good quality急谁能告诉我这个是什么结构啊?为什么要用OF his trousers are blue 对划线部分提问划线部分是blue his trousers are of good quality急谁能告诉我这个是什么结构啊?为什么要用OF There are his trousers,Give（） A them to his D him them 选择哪项,请说明原因, my trousers are too small for him,he has to put on his own(为什么不用his own one) 如何判断特殊疑问句以及一般疑问句的主语?例如这个句子：Where are his new trousers?这句话be 动词是用are 应该怎么解释呢?不是当his new trousers 做主语的时候,例如His new trousers are under the desk.谓语 Those are her trousers.(改成同义句)Those trousers are__. The trousers are mine还是The trousers is mine?为什么? Are these your trousers?Yes,these are, Are your friend's mother at home today 改错Are these their coats?Yes,these are.Ask that boy.I think its his racket.His namees are Lucy and Lily.Who's trousers are these?They are Tom's. 英语翻译americans are still chuckling about the pants suit.a man-a judge,no less-sued his dry cleaners for $54m for allegedly losing his trousers.