填两个词急用!There are little rings in the middle.A_____each ring is a larger one.The ring near the bark is the biggest one of all.C______these rings,a tree grows one ring each year.A ten-year-old treehas ten rings.
问题描述：
填两个词急用!
There are little rings in the middle.A_____each ring is a larger one.The ring near the bark is the biggest one of all.
C______these rings,a tree grows one ring each year.A ten-year-old treehas ten rings.
答
in
About to
答
of IN
答
After
Counting(这个不肯定,好像不顺)
这应该是一篇文章吧,没有上下文不知道怎么填