所有员工都完全超负荷了。

All the staff are completely ___overloaded.

我觉得他们给孩子的活动安排得太满了。

I feel that they ___overload their children with activities.

我当时也工作超负荷，对于是否要加入这个小组有很多疑虑。

I was also ___overloaded with work and had many doubts about joining the group at all.