As we know, nothing can be equal to the ______ ofparents for their children in the world.A．appreciation B．intention C．invitation D．affection D【解析】试题分析：根据句意：众所周知，世界上没有东西可以和父母对孩子的爱进行媲美。

I have a piece of good news for you. Guo Jingming’s new book ________last Saturday.

The island is _____ attractive in spring and autumn because of the pleasant weather in both seasons [ ]

Don’t _______ in class.

Smile to the world, ___________ the world will smile back to you.