When we ask the question Why? about a subject, we usually begin to explore its （）.

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• When reading the text after underlining the key words in the question, （） matters.
• please ______ your hand if you have any question at all.
• He must answer the question ______ he agrees with it or not.
• This is an “egg-and -hen” question.最合适的译文是（）
• You can ask a close-ended question in small talk ( )