V6 P4, 48%
"Like Airi said, there must have been a spell over this place that made the interior seem much more spacious than it appeared."
Seem and appear are synonyms, so with the way the sentence is structured one should be changed. Some options might be:
"There must have been a spell over this place that made the interior seem much more spacious than it (first) appeared."
Or "there must have been a spell over this place that made the interior seem much more spacious than [its appearance from outside would suggest could be possible]
V6 P5, 8%
"SuddenlyI heard someone speak to me."
Missing space