きりかえる
to switch
切り替えることが大切です。
It is important to switch.
Practice distinguishing this from similar verbs. Context clues in the sentence will guide you. Check if there's a transitive/intransitive pair — learning both together is very efficient. N2 vocabulary — this word appears in formal writing and news articles.
From the JLP Quiz question bank — the word in the form it is actually tested in.
「切り替える」の意味はどれですか？
Answer: それまでのものをやめて別のものにすること
