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
play \(\rightarrow\) playing
thousand \(\rightarrow\) thousands
