i visited the great wall_____my stay in beijing大小写有点问题 见谅.请问是填 “when”吗?

问题描述:

i visited the great wall_____my stay in beijing
大小写有点问题 见谅.
请问是填 “when”吗?

是啊!不过题应该是I stay in BEIJING吧!?

during
我呆在北京(期间)我去了长城.