our classroom is on the ( ) floor.括号里该填什么?A:one B:threeC:last D:first
问题描述:
our classroom is on the ( ) floor.括号里该填什么?A:one B:threeC:last D:first
答
our classroom is on the ( ) floor.括号里该填什么?A:one B:threeC:last D:first