那些学生从不带零食来，却总是吃别人的，真是一群爱占便宜的人。

Those students never bring snacks but always eat others' food—they're such ___moochers.

那些蹭吃蹭喝的人从来不付房租，还总是吃光冰箱里的食物。

Those ___moochers never pay rent and always eat all the food in the fridge.