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下图表示巨噬细胞对H₇N₉病毒分子的处理和呈递过程，以下说法错误的是(　　)

在下列各句的空格内填上一个适当的完整的单词，该词的首字母已给出。
1. Tony is really p____. He keeps waiting outside the house for almost three hours.
2. The f____  stood on the board, laughing happily, because they caught lots of fish this time.
3. When I heard of my grandma's d____, I couldn't help crying.
4.Parents hope their children can do best in the class, so they usually e____  too much of their children.
5. There is nothing in the box. It's e____ 

我们能直接或间接观察到的实际存在的东西都是____，我们的整个世界都是

由____构成的。

﹣2的相反数是（　　）