3 sentences

1. 不要偷看我的日记。

   bù yào tōu​kàn wǒ de rì​jì.

   Don't peek at my diary.

   Source: Dong Chinese Dictionary

2. 你没在偷看吧？

   nǐ méi zài tōu​kàn ba?

   You're not peeking, are you?

   Source: OpenSubtitles

3. 我们每天晚上都会在阁楼上偷看外婆。

   wǒ​men měi tiān wǎn​shang dōu huì zài gé​lóu shàng tōu​kàn wài​pó.

   We spy on Grandma every evening from the attic.

   Source: OpenSubtitles