no matter how busy
どんなに忙しくても新聞ぐらいは読むべきです。
No matter how busy you are, you should at least read the newspaper.
たとえどんなに忙しくても、彼女は毎日絵を描いている。
No matter how busy she is, she paints every day.
どんなに忙しくても、宿題はしなければならない。
No matter how busy you are, you have to do your homework.