She often visited the British Museum _____she was staying in London A.while. B.during 答案是...

She often visited the British Museum _____she was staying in London A.while. B.during 答案是...

题目
She often visited the British Museum _____she was staying in London A.while. B.during 答案是...
She often visited the British Museum _____she was staying in London
A.while. B.during
答案是A,为什么不选B?while和during的区别是什么?
答案
While是:‘当...的时候”,而during后面+一段时间,如during the weekend.
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