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This is the very book ___ I'm looking for.A.it B.what C.wher This is the book( ) I am looking for.A.it B./ C.what This is the book _____ I am looking for.A.what B.that C.who 选择：It is the book ( )I am looking for.A.which B.that C.whom This is the very book that I'm looking for.Where did you pic Is this( )book?.yes,it's( )what I'm after.A.the very just I'm looking for this book it's in the list of titles but I c I'm_my book,it's lost A Looking for B Looking at C Looking 选择：I'm ( ) my book. A:looking at B:looking for C:looking this is the ____book i am looking for A.very B. What's this?___ A This is a dog B That's C It's a dog D I'm this is the very book that i am looking for中that 可以省略吗