3 sentences

1. 他负责在主人不在时看管这栋房子。

   tā fù​zé zài zhǔ​rén bù zài shí kān​guǎn zhè dòng fáng​zi.

   He is responsible for looking after the house while the owner is away.

   Source: Dong Chinese Dictionary

2. 所有无人看管的行李将被立即没收。

   suǒ​yǒu wú rén kān​guǎn de xíng​li jiāng bèi lì​jí mò​shōu.

   All unattended baggage will be confiscated immediately.

   Source: OpenSubtitles

3. 由于证据确凿，嫌疑人已被警方正式收押看管。

   yóu​yú zhèng​jù què​záo, xián​yí​rén yǐ bèi jǐng​fāng zhèng​shì shōu​yā kān​guǎn.

   The suspect has been officially taken into custody by the police due to conclusive evidence.

   Source: Dong Chinese Dictionary