he spent about 21 hours in space 对 about 21 hours 提问

问题描述:

he spent about 21 hours in space 对 about 21 hours 提问

How long did he spend in space?这是关于多少时间的提问,所以用How long

How long did he spend in apace?
希望能帮助你

How long did he spend in space?
希望对你有所帮助,不明白再问吧