When the mother realized what had happened to her child, she ________ her face in her hands. So no one could see her expression.

ights______ because of the air traffic control, the passengers had to wait in the hall.

Some students often listen to music __________ classes to refresh themselves

I’ve shown you all the interesting and importantplaces of our school.— Thank you for somuch time.

下列句中加点的字，词类活用相同的一项①或棹弧舟 ②屈贾谊于长沙 ③项王则夜起 ④襟三江而带五湖⑤乐琴书以消优 ⑥骊山北构而西折 ⑦目吴会于云间