if only(～であればなあ): If only I had studied harder for the test. (もっと試験勉強を頑張っていればなあ) - 試験に出る! 英単語検索辞書

if only(～であればなあ): If only I had studied harder for the test. (もっと試験勉強を頑張っていればなあ)

If only I had studied harder for the test.