I have a nice pencil case.It's — and a rabbit is on it.a.new

a
先排除b,因为前句已提到nice；一般笔袋不会很大,所以排除c；由nice推断,再排除d
再问： 有可能是b吗，还有再帮我解决一道问题，There are many new books in it.There are—English and in Chinese.a.in b.on c.with d.of
再答： 一般不会在紧接着的下一句再重复这一特性。 There are many new books in it.There are—English and in Chinese.a.in b.on c.with d.of 第二句应该是：They are ..... 吧？ There are many new books in it.Thy are (in) English and in Chinese. 里面有许多新书，（他们分别是）英语书和中文书。 希望对你有启发，如对你有帮助，请记得及时采纳