What is this passage mostly about?
A. How long it takes for light from the sun to reach the earth
Đáp án đúng là: B
What do teens feel when they study hard for an exam but get bad marks?
Based on the evidence in the passage, how can the sun be best described?
What would happen if the sun disappeared, according to the passage?
The word “pollutants” in paragraph 4 could best be replaced by “_________”.
The Sun and the objects that travel around it is called ________________.