His trousers are on the bed.Mine __ hehind the door.应该填is 还是 are?

Those are his trousers.(对his trousers提问） His trousers are on the bed.Mine __ hehind the door.应该填is 还是 are? my trousers are too small for him,he has to put on his own(为什么不用his own one) The trousers on (销售)are very nice. 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? He went upstairs to his bedroom and put the trousers on.这里put the trousers on.如何翻译 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 his parents are hard on There are his trousers,Give（） A them to his D him them 选择哪项,请说明原因, 哪种英语用法正确啊?There are some trousers on the bed.There is a trousers on the bed.假如床上就一条裤子. Trousers 的用法：1.Tom,here ____ your new trousers.Please _____.A.is ,put it on,B.is put them on C.are,put it on D.are put them on第一空是复数are,第二空是不是用代词them呢?2.Flared trousers are out this year.3.This pair of trousers trousers 的用法1.Tom,here ____ your new trousers. please _____. A. is , put it on, B. is put them on C. are, put it on D. are put them on答案是哪个呢?第一空是复数are,第二空是不是用代词them呢?2. Flared trousers are out this y