Unit 4 Where’s the bird?同步练习 3一、根据提示将句子补充完整。1. This (不是)_______ my pencil.2. It is on the ______(桌子).3. Susan is _______(在…旁边)the window.4. The dog is _____ (在…上)the chair.5. My ruler is _______(在…里面) the schoolbag.二、看图将下列单词补充完整。 1._eh_nd 2._es_ 3...