Câu hỏi:

Ralph Nader was the most prominent leader of the U. S consumer protection movement.

The shop assistant was totally bewildered by the customer’s behavior.

Around 150 B. C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.

His career in the illicit drug trade ended with the police raid this morning.

She is always diplomatic when she deals with angry students.

Though many scientific breakthroughs have resulted from mishaps it has taken brilliant thinkers to recognize their potential.

The notice should be put in the most conspicuous place so that all the students can be well-informed.