在这个疑问句中,'where'是一个疑问词。
In this question, 'where' serves as an ___interrogative.
他用疑惑的眼神看着我,等待我的解释。
He gave me an ___interrogative glance, waiting for my explanation.
在英语中,疑问句通常以疑问词开头。
In English, ___interrogative sentences usually begin with a question word.