What has caused increasingly serious traffic jams?
A. Slow construction of urban railway lines
Giải bởi Vietjack
Đáp án đúng là: D
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 Sun and the objects that travel around it is called ________________.
The word “pollutants” in paragraph 4 could best be replaced by “_________”.
