wo visitied Beijing and Shanghai ____(when /while/ as/ during) our stay in China.
问题描述：
wo visitied Beijing and Shanghai ____(when /while/ as/ during) our stay in China.
答
we visited Beijing and Shanghai during our stay in china
答
during
答
during,因为后面是our stay是一个名词的词组!when ,while ,as ,都是连词,后面加句子或者是非谓语!：）