this is factory这句话对吗?this is the factory 是不是名词做主语时前要加the?

this is factory这句话对吗?this is the factory 是不是名词做主语时前要加the? This is my parents.这句话对吗? Is this boy'cap?这句话对吗 The problem is which one you want to choose上面的句子对吗?那么下面的句子呢?this factory is which some foreign friends visited last Friday.this factory is which some foreign friends visited last Friday 那这句话对吗？ this is pen 对吗This is book.这句话的句式对吗? is this the factory in which/where your father works?这句话怎么还原? This is the teachers’ reading-room这句话对吗? MR Green ,this is MRS Mary Brown这句话对吗 This is Kate's and Lucy' room这句话对吗 what this is in English对吗,这句话? This issue is being concern of society .这句话对吗 Whose is this book?这句话对吗?与Whose book is this?是同义句吗 this boy is too stupid to answer this question 这句话对吗 如果不对 请改好再传上来 is this factory(the one)we visited last year怎么知道他缺少表语?这句话因为缺少表语所以要用the one.还原不是this factory is we visited?怎么知道他缺少表语? This factory is where I worked last year中的where的问题这句话对吗?如果对的话那这道题 Is this house ____ you visited Mr.Black last summer?A.where B.which C.the one that D.the one where答案为什么选D而不选A呢? This is a house where the roof is broken. 这句话对吗? this is a photo of _a_ _boy_.he is a lovely boy.这句话对吗 How long has this factory been open这句话转变成这样可以吗How long has been factory open