3 sentences

1. 你怎么能这么粗心？

   nǐ zěn​me néng zhè​me cū​xīn?

   How could you be so careless?

   Source: OpenSubtitles

2. 你总是这么粗心。

   nǐ zǒng​shì zhè​me cū​xīn.

   You're always so careless.

   Source: OpenSubtitles

3. 她不是个粗心、鲁莽、或是愚蠢的女人。

   tā bù​shì ge cū​xīn, lǔ​mǎng, huò​shì yú​chǔn de nǚ​rén.

   She wasn't a careless, reckless or stupid woman.

   Source: CCMatrix