3 sentences

1. 他知道那是死胡同吗？

   tā zhī​dao nà​shì sǐ​hú​tòng ma?

   Does he know that's a dead end?

   Source: OpenSubtitles

2. 恐怕我们走进死胡同了。

   kǒng​pà wǒ​men zǒu jìn sǐ​hú​tòng le.

   I'm afraid we've hit a dead end.

   Source: OpenSubtitles

3. 他们再一次发现了一条死胡同。

   tā​men zài​yī​cì fā​xiàn le yī tiáo sǐ​hú​tòng.

   Once again, they found a dead end.

   Source: CCMatrix