when where the plane arrive/arrive in
问题描述：
when where the plane arrive/arrive in
答
when /where the plane arrive?
因为后面没有宾语,故不用介词in
加油!不明白再问!如果帮到你,请采纳,谢谢!回答是：In an hour.还是这个答案吗是，即When will the plane arrive ?In an hour .