Question 2: What increases but never decreases?

Question 3: Which months have the 28th day?

Question 4: What are the two things that people never eat before breakfast?

Question 5: When I eat, I live but when I drink, I die. Who am I?

Question 6: I can fly but have no wings. I can cry but I have no eyes. Wherever I go, darkness follows me. What am I?

Question 7: What is orange and sounds like a parrot?

Question 8: What word becomes shorter when you add two letters to it?

Question 9: What gets wetter the more it dries?

Question 10: What has one head, one foot and four legs?

Question 11: What is the largest animal on earth today?

Question 12: Where were the first Olympic Games held?

Question 13: Al + O2 → Al2O3. The balanced coefficient of the equation is:

Question 14: Who is the author of the poem "Lượm"?

Question 15: What is the capital of Vietnam?

Question 16: What is the largest desert in the world?

Question 17: How many ethnic groups are there in Vietnam?

Question 18: What is Thuy Kieu's last name?

Question 19: When did the Internet start?

Question 20: In 1928, which cartoon character first appeared?