-How far is it from Nanjing to Shanghai?-It's over_ A、three hour's drive B、three hours'drive C、three hours'drives D、three hour drive
问题描述：
-How far is it from Nanjing to Shanghai?-It's over_ A、three hour's drive B、three hours'drive C、three hours'drives D、three hour drive
答
选B
three hours' 修饰drive.名词复数的所属格放复数后，A排除；drive此处不可数，C排除；D复数都没加，所以选B
答
B
答
B,三小时的车程,用名词所有格,表达有three hours' drive和three-hour's drive这两种表达.
答
B
3小时 hour 要用复数
drive动词做名词