spellit,please_key this are a ruler whatsthis_thisisabook Bstandsfor thisisaoldmap哪错了

额，我来试着写下是不是原来是这样的
spell it,please.
key
this are a ruler.
what's this? this is a book.
B stand for this is a old map.
额，我不知道是问什么啊，如果里面语法有错，就是
this is a ruler,不是are.
然后 this is an old map.不是a.
希望有帮到你。