3 sentences

1. 老师准许他提前离开教室。

   lǎo​shī zhǔn​xǔ tā tí​qián lí​kāi jiào​shì.

   The teacher permitted him to leave the classroom early.

   Source: Dong Chinese Dictionary

2. 塔台已经准许该次航班进场。

   tǎ​tái yǐ​jīng zhǔn​xǔ gāi cì háng​bān jìn​chǎng.

   The control tower has cleared the flight for entry.

   Source: Dong Chinese Dictionary

3. 卫兵通报后，将军才准许他入帐参见。

   wèi​bīng tōng​bào hòu, jiāng​jūn cái zhǔn​xǔ tā rù zhàng cān​jiàn.

   Only after the guard announced him did the general permit him to enter the tent for an audience.

   Source: Dong Chinese Dictionary