近几个月经济活动一直很缓慢。

Economic ___activity has been slow in recent months.

厨房里突然出现了一阵忙碌。

Suddenly, there was a flurry of ___activity in the kitchen.

该地区工业活动的增加导致了交通拥堵。

The increased industrial ___activity in the region has led to traffic congestion.