Sentence:  “Well,” I answered, at first with uncertainty, then with inspiration, “he would <WSD>do</WSD> splendidly to lead your cotillon, if you think of having one.” &para; “So you do not dance, Mr. Crocker?” &para; I was somewhat set back by her perspicuity. 
Meaning of the word marked with <WSD> tags:  To suffice.