句型转换。

66. It’s a bag.(改为一般疑问句)

　 ______ ______ a bag?

67. Dave and Ann are my friends.(改一般疑问句)

_________ Dave and Ann _________ friends?

68. That’s a pencil case in English. 对划线部分提问）

_________ _________ in English?

69. Those are my books. (改为单数句)

　 ________ my ______.

70. that , not ,her ,is ,baseball （连词成句）

_____________________________________________.

photo , my , here , a , is , family , of

____________________________________.