Clearly, ____ object of the game is to improve ____ children's math skills.

单位和个人可以未经允许，进入计算机信息网络或者使用计算机信息网络资源。A．正确 B．错误

不定项选择单位和个人可以未经允许，进入计算机信息网络或者使用计算机信息网络资源。

David has decided ____ football at the end of this seas...

单项选择题David has decided ____ football at the end of this season.

I chose this coat in the end because ____ ones were all...

单项选择题I chose this coat in the end because ____ ones were all too expensive.