4 sentences

1. 英语是唯一的一门必修学科。

   yīng​yǔ shì wéi​yī de yī​mén bì​xiū xué​kē.

   English is the only compulsory subject.

   Source: CCMatrix

2. 英语变成了我最喜欢的学科。

   yīng​yǔ biàn chéng le wǒ zuì xǐ​huan de xué​kē.

   English has become my favorite subject.

   Source: Tatoeba

3. 对多数学生来说，这些学科已经失去了吸引力。

   duì duō​shù xué​sheng lái​shuō, zhè​xiē xué​kē yǐ​jing shī​qù le xī​yǐn​lì.

   These subjects have lost their appeal for most students.

   Source: UM-Corpus: Spoken

4. 图书馆的书按学科分类。

   tú​shū​guǎn de shū àn xué​kē fēn​lèi.

   The books in the library are classified according to subject.

   Source: UM-Corpus: News