HSK V7-9
Correct

丢失

/ diūshī / 
Strokes

Definition

丢失 is a Verb, which means “to lose”.

Example

丢失 as a Verb.
1
Wǒ
我
de
的
shēnfènzhèng
身份证
diūshī
丢失
le
了
  
。

I have lost/mislaid my identity card.