___ their stay in Beijing,they visited many beautiful places.我知道填During.但in為何不可以

熱心網(wǎng)友

during強(qiáng)調(diào)一段時(shí)間，而in強(qiáng)調(diào)點(diǎn)，況且表示時(shí)間一般不用in，用at較多