3 sentences

1. 上级领导下来视察工作了。

   shàng​jí lǐng​dǎo xià​lai shì​chá gōng​zuò le.

   Higher-level leaders have come down to inspect the work.

   Source: Dong Chinese Dictionary

2. 上级领导下周将亲自来我校视察。

   shàng​jí lǐng​dǎo xià zhōu jiāng qīn​zì lái wǒ xiào shì​chá.

   Senior leaders will personally come to inspect our school next week.

   Source: Dong Chinese Dictionary

3. 最终的计划书已经交由上级领导审定。

   zuì​zhōng de jì​huà​shū yǐ​jīng jiāo​yóu shàng​jí lǐng​dǎo shěn​dìng.

   The final proposal has been submitted to the superiors for approval.

   Source: Dong Chinese Dictionary