1. errors: (to) play
correct: playing
2. errors: Let me think.............♀→
1. Lỗi sai: play
-> The doctor says you should spend a little time playing video games
2. Lỗi sai: thousand
-> The public library in the city has thousands of good books
Chúc bạn học tốt! 
1/ Lỗi: Play.
Sửa: The doctor says you should spend a little time playing video games.
2/ Lỗi: Thousand.
Sửa: The public library in the city has thousands of good books.
1.The doctor says you should spend a little time to play video games
The doctor says you should spend a little time playing video games
2.The public library in the city has thousand of good books
The public library in the city has thousands of good books
1. play => playing
2. thousand => thousands
play \(\rightarrow\) playing
thousand \(\rightarrow\) thousands
