Why is it wrong to put the classifier for books?
Because this is talking about books in general, you don't use the classifier in this type of situation.
Always a pleasure to meet a well read bird.
Con chim là thông minh lám!
Con chim thông minh lắm*
Don't use là with adjectives and lắm has a breve (ă).
Oh, okay thanks. My Vietnamese is a little rusty.
Why no nhung?