资源简介：
二、用所给单词的单、复数形式填空。
1. I like _________ dolls. I like _______ doll. (this)
2. I like cats, _______(dog) and ________(monkey) very much.
3. ______ bicycles are big. ________ bicycle is big. (that)
4. ________ are my students. _______ is not my student. (she)
5. Is _______ your pen?
No, _____ is not my pen. _______ are my pens. (it)