用动词（be）的正确形式填空

Where【is】my CD? It【is】not on the desk now. It【was】there just now. It【is】_my favorite present from my good friends. they【are】my classmates.
祝你学习进步,更上一层楼! (*^__^*)
不明白的再问哟,请及时采纳,多谢!