我要去超市买菜。

Wǒ yào qù chāoshì mǎicài.

I'm going to the supermarket to buy food.

超市里的纸巾都卖完了。

Chāoshì lǐ de zhǐjīn dōu màiwán le.

All the paper towels are sold out at the supermarket.

我们一起去超市逛逛吧。

Wǒmen yìqǐ qù chāoshì guàngguang ba.

Let's go to the supermarket and walk around.