🎯 副詞 ・ リン
TOEIC Part5文法問題 リン: Q16（副詞）
The building's air conditioning system is ___ inspected every six months.
The building's air conditioning system is ___ inspected every six months.
答えを見る
正解: B) routinely
The blank modifies the passive verb phrase 'is inspected', so the adverb 'routinely' (regularly) is correct — the slot between a be-verb and a past participle is a natural home for an adverb. 'Routine' is a noun/adjective, 'routines' is the plural noun, and 'routined' isn't a real word.