The students raised their hands to answer the question.
Meaning: The students showed that they wanted to answer the teacher's question.
Choice of Words: Students refers to those who attend a school or college. Raised means to lift something up. Hands are the parts of the body at the end of the arms. Answer means to provide a response to a question. Question refers to a sentence or phrase asking for information. Together, "The students raised their hands to answer the question" conveys the idea of students indicating their desire to respond to a query posed by the teacher.
Alternative Expressions
Related Expressions