句型转换。

66. They have been talking for the whole three hours.(一般疑问句并作肯定回答)

__________they____________  ____________ for the whole three hours? Yes, they     ______ .

67.How about a goldfish ?  .(改为同义句)

           ___           _______ a goldfish ?

68. To spit（吐痰）in public places is not polite.( 同义句)

_____________ isn’t polite _____________           ______ in public places.

69. The boy with the name Joe is my classmate.（改为同义句）

  The boy         _________          ________ is my classmate .

70. Lu Ning has been skating since four hours ago.(同义句)

  Lu Ning has been skating         _______four hours.

71. I would like to come to China for my vacation.(改为一般疑问句)

           ______         ______ like to come to China for         ______ vacation.

72 . Maria has to finish her homework first. (否定句)  

   Maria         _______have to finish her homework first.

73. Maria is a lucky girl. (改为感叹句)

        _______          ______        _______         ________ Maria is !