English
Senior High

has it beenになるのがわかりません
it is been since~の疑問系と捉えてis it beenとしていたのですがどこが間違いか教えてください
※写真は正しい解答です

B Fill the blanks using the words in brackets. TOA: How long has it been since moved here? [long, it] 7語

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