Question words, often called wh- words, are function words that can be used to ask open questions. Some words, such as who, which or where, can also be used to introduce relative clauses.
Click on a topic to learn more about question words.
Question words, often called wh- words, are function words that can be used to ask open questions. Some words, such as who, which or where, can also be used to introduce relative clauses.
Click on a topic to learn more about question words.
Aerobic exercise improves the body's ability to use oxygen.
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