Tom's dream is to have his company__ to direct the film.A.that B.in which C.by which D.how

选B,原因如下：
这个句子的意思是“汤姆的梦想是将来能有一家可以拍这部电影的公司”,把这个句子拆开来翻译也成立,Tom's dream is to have his company,so he can direct the film in it.汤姆的梦想是将来有一家自己的公司,他可以在公司拍这部电影.其中的“in it”就指原句中的“in which”.