我回想起在法国生活的那段时光。

I ___thought ___back to the time when I was living in France.

玛丽试图回想她上次从抽屉里拿走它的时间。

Mary tried to ___think ___back to when she had taken it last from the drawer.

当我看到老照片时，我常常回想起我的童年。

When I see old photos, I often ___think ___back to my childhood.