https://www.youtube.com/watch?v=SKR9VZ6N-rk 2:40 only a figment of my imagination.
https://www.youtube.com/watch?v=nyJTybccwIQ 1:0512 I think I saw him today. I know it was just my imagination. 気のせい
https://www.youtube.com/watch?v=Y3zNehKAPY4 2:50 it's not just in her imagination. インフレは彼女の気のせいじゃない。
参考リンク
http://bridge-english.blogspot.jp/2010/07/blog-post_8847.html 空耳(そらみみ)を英語でなんと言うか?
練習問題解答
a-8896 a figment of my imagination
a-9752 a figment of your imagination
b-0325 a figment of his imagination
b-4999 a figment of your imagination