1. Scientists are very excited about the ____________________ of an ancient stream on Mars. (DISCOVER) 2. Harry needed hospital ____________________ after his accident. (TREAT) 3. If you have any ____________________ about the robbery, call this number. (INFORM) 4. The ____________________ lasted for nine hours and caused a lot of earthquakes. (ERUPT)

Phương pháp làm:
- Đọc kỹ câu hỏi và xác định từ cần điền vào chỗ trống. Với những từ có hậu tố "ion" hoặc "ment", ta cần thêm một số phụ âm cuối để tạo thành danh từ.
- Xem xét về ý nghĩa của từ cần điền và nghĩ đến những từ có cùng ý nghĩa.
- Xác định loại từ cần điền (danh từ, động từ, tính từ, trạng từ...) và hình thức của từ (nguyên mẫu, quá khứ, phủ định, nguyên mẫu bổ sung, dạng phủ định của từ/phụ âm cuối).
- So sánh các từ gợi ý với câu hỏi để chọn từ phù hợp nhất.

Câu trả lời:
1. Scientists are very excited about the discovery of an ancient stream on Mars.
2. Harry needed hospital treatment after his accident.
3. If you have any information about the robbery, call this number.
4. The eruption lasted for nine hours and caused a lot of earthquakes.

The discovery of an ancient stream on Mars has scientists buzzing with excitement. The presence of a stream indicates that there was once liquid water on the planet's surface, which is a key ingredient for supporting life as we know it. This finding is a significant step forward in our understanding of the history and potential habitability of Mars. It also raises intriguing questions about whether there could still be remnants of ancient life on the planet.

A team of scientists recently made a groundbreaking discovery on Mars - an ancient stream that once flowed with water. This finding has sparked great excitement among scientists as it provides further evidence that Mars may have once harbored life. The discovery was made using data collected by the Mars rover, which has been exploring the Red Planet for several years. This discovery opens up new possibilities for future missions to Mars and further exploration of its past.

1. Scientists are very excited about the discovery of an ancient stream on Mars.