已知$△ABC$中，$AC=2\sqrt{2}$，$BC=2$则$A$角的取值范围是（   ）

提示词语： Muhu Park, pick up, water, put up posters, gloves, shoes 

提示问题：When and where will you go?

What will you do in this activity?

What do you advise Peter to prepare for this activity?

Dear Peter,

    How is it going?

    I'm writing to invite you to take part in the volunteer activity.

    I'm looking forward to your early reply.

Li Hua

    I've dreamed of becoming a writer since I was a teenager. But ____isn't easy to get a book of mine published.____ I've tried hard, none of my books have been published. This is really ____(upset).

    This morning, I received a call from a publisher and ____(tell) once again that there was no way my book would be published.____ ( feel ) sad, I left home and went to the park near my apartment. At the park, I sat down on the bench near the grass.

    While I was sitting there, I saw a little boy about one and a half years old. He was running on the grass,____ his mother not far behind him. He looked so happy when he enjoyed the ____(free) of running on the grass. He then fell on the grass, but he quickly got up and continued ____(run) as fast as he could again even without looking back at his mother. He was still running with a smile on his face, as if nothing ____(happen).

    Seeing that, I was truly inspired. I ____(sudden) realized that I shouldn't get discouraged after experiencing failure. Instead, I should cheer up and keep on trying.

1956年苏联共产党召开了“____”，赫鲁晓夫作了题为《关于个人崇拜及其后果》的报告，即“____ ”，这份报告错误地全盘否定了____ 。