3 sentences

1. 便利店里的蛋塔卖完了。

   biàn​lì​diàn lǐ de dàn tǎ mài​wán le.

   The egg tarts in the convenience store are sold out.

   Source: Dong Chinese Dictionary

2. 我每天都吃便利店便当。

   wǒ měi tiān dōu chī biàn​lì​diàn biàn​dāng.

   I eat convenience store lunches every day.

   Source: OpenSubtitles

3. 他去便利店买了一盒套套。

   tā qù biàn​lì​diàn mǎi le yī hé tào​tao.

   He went to the convenience store to buy a box of condoms.

   Source: Dong Chinese Dictionary