Sentence:  One part of her audience was totally engaged , the connoisseur witnessing a peculiarly fine performance of some ancient classic , the other part , the guest of the connoisseur , <WSD>attentive</WSD> as one who must take an intelligent interest in that which he does not fully understand . 
Meaning of the word marked with <WSD> tags:  (often followed by `to') giving care or attention