Correct

下操

/ xià cāo / 
Strokes

Example

As a Verb

have a workout; drill

1
Wǒmen
我们
shàngwǔ
上午
xià
下
cāo
操
  
,
xiàwǔ
下午
shàngkè
上课
  
。

We have drills in the morning, and lectures in the afternoon.

As a Verb

finish drilling

2
Tā
他
gāng
刚
xià
下
cāo
操
huílai
回来
  
。

He is just back from drill.