（4分）将①分子②原子③离子④质子⑤中子⑥电子等粒子名称填入下列空格中：

（1）化学反应中一定发生改变的是 _______________ ；

（2）构成物质的基本粒子是 _________________ ；

（3）构成原子的是  _______________________ ；

（4）带电的粒子有____________________ 。

Mr. King didn't know _____ yesterday evening. [ ]

A. when does his son come back

B. when his son comes back

C. when did his son come home

D. when his son came home