OEThe
“but” in the sentence suggests that there is a contrast between the group’s overall performance and the quality of the sound; since the former is given a positive description (“elegant and polished”), the description of the latter in Blank (ii) must be negative. Furthermore, the quality of the sound must be in contrast with the apparent energy of the performers. The only answer choice for Blank (ii) that meets these conditions is “tepid,” so it is correct. Te sentence as a whole suggests that the setting of the concert had a negative effect on the performance; the answer choice for Blank (i) that best fts this meaning is
“exacted a toll,” so it is correct.
Answer Choice B for Blank (i),
“encouraged nervousness,” is also negative in meaning, but it is incorrect, because the sentence does not talk about the psychological state of the musicians or the audience.
Thus the correct answer is exacted a toll (Choice A) and tepid (Choice E).