——How much money did you pay for the drink?
——None. It's ______.

   This story is about a young man. He worked hard at his lessons. He was too busy. He didn’t have time to rest, so he was ill. Every night, when he went to bed, he closed his eyes and tried to sleep（睡觉）. But he couldn't. He thought: “I must go to see the doctor.” He said to the doctor.“I can't go to sleep at night."“Try counting numbers. When you reach one thousand, you'll be asleep.”The next day the man came back to the doctor's office. “Well,” said the doctor, “How are you today?”
   “Yes, he said,” I tried counting one, two, three. . . up to（直到）one thousand. But when I reached five hundred and sixty-nine, I began to feel sleepy (感到困倦). I had to get up and drank some tea. Then I went on counting up to one thousand. But I still couldn't fall asleep.

①男孩说：“没……我没看见。”这时，男孩在想____。

②列宁说：“多好的灰雀呀，可惜再也飞不回来了。”这时，列宁在想____。

③“一定会飞回来！”男孩肯定地说。这时，男孩在想____。

④列宁看看男孩，又看看灰雀，微笑着说：“你好！灰雀，昨天你到哪儿去了？”这时，列宁在想____。

A．我明天就把灰雀送回来。

B．我不能说我把灰雀捉走了。

C．男孩已经把灰雀送回来了，我不能问男孩，那样会伤害他的自尊心。

D．灰雀是男孩捉走的，我要用我的担心与惋惜感染男孩，让他主动送回灰雀。

下图显示的是某科研工作者在我国某山区海拔3700米处拍摄的冰川和雪莲花盛开景象（该地位于43°5'N，86°48'E；距离所在省级行政区中心城市的西南约120千米处）。据此回答下面小题。