The answer is the number 5. Because the word "learn" in "study hard and make progress forever" is five strokes, the answer is the number five.

The famous motto about studying hard is as follows:

1, the more you learn, the poorer you feel. -Shelley

We should cheer up and study hard. Hard work, three words, one is called down, the other is called complaining, and the other is called work. You must pull yourself together and work hard. Mao Zedong

Learning this matter doesn't care whether anyone teaches you. The most important thing is whether you have consciousness and perseverance. -Fabers

Youth is a part of the whole social force, and it is the most active and energetic force. They are the most willing to learn and the least conservative, especially in the socialist era. Mao Zedong

5, as long as the heart is still beating, we must study hard. -Zhang Haidi

6, learning should pay attention to details, not sloppy, so as to gradually learn, explore and discover objective laws. -Xu Teli

7, step up study, grasp the center, rather fine than miscellaneous, rather specialized than more. Zhou Enlai

8. It is never too late to study. Gorky

9. Learning is labor, which is full of thoughts. -ushinski

10, the most precious thing in life is life, the most needed thing in life is study, the most enjoyable thing in life is work, and the most important thing in life is friendship. -Stalin

1 1. Study hard and work hard to make your youth more glorious. -Wang

12, people who learn to learn are very happy people. -Minand