3 sentences

1. 他还没给我复信。

   tā hái méi gěi wǒ fù xìn.

   He hasn't replied to my letter yet.

   Source: Dong Chinese Dictionary

2. 山顶常年被厚厚的白雪所覆。

   shān​dǐng cháng​nián bèi hòu​hòu de bái​xuě suǒ fù.

   The mountaintop is covered with thick white snow all year round.

   Source: Dong Chinese Dictionary

3. 这种祸乱足以导致倾城覆国的后果。

   zhè zhǒng huò​luàn zú​yǐ dǎo​zhì qīng​chéng fù guó de hòu​guǒ.

   This kind of chaos is enough to lead to the downfall of cities and nations.

   Source: Dong Chinese Dictionary