2 sentences

1. 奶奶正坐在沙发上，专心地给孙子打毛衣。

   nǎi​nai zhèng​zuò zài shā​fā shàng, zhuān​xīn de gěi sūn​zi dǎ máo​yī.

   Grandma is sitting on the sofa, intently knitting a sweater for her grandson.

   Source: Dong Chinese Dictionary

2. 她正坐在窗边，安安静静地辫着长长的头发。

   tā zhèng​zuò zài chuāng biān, ān'ān​jìng​jìng de biàn zhe cháng cháng de tóu​fa.

   She is sitting by the window, quietly braiding her long hair.

   Source: Dong Chinese Dictionary