App: Learn English grammar fast
Developer: 景琦 孙
Genres: Education

Features of basic English grammar learning software:
1. The words in the sentence are classified in order to deepen the understanding of grammar.
2. Follow the human forgetting curve and practice repeatedly to remember more deeply.
3. The study progress is visible, and the study enthusiasm is improved.
4. Mistakes will be reported immediately to deepen understanding of grammar.

Release notes:
Fixed the error of button 【when】.