根据短文内容,填写合适的单词或用所给单词的正确形式填空,使短文意思完整。
The Lantern Festival is a traditional Chinese festival. It comes on the 15th day of the first lunar month. Most people think 1. it's a wonderful time for family get-togethers and fun activities.
Last year, my mom made sweet yuanxiao for us. She said she 2. (learn) to make it from my grandma when she was young. My dad and I hung beautiful red lanterns outside our house. He told me the lanterns stood for good luck and 3. (happy).
In the evening, we went to the park to watch the lantern show. There were all kinds of lanterns in different shapes. I was so excited 4. I took many photos. A little boy asked me a riddle and I got it right. He said he was 5. (surprise) at my answer.
My grandpa told us some old stories 6. the festival. He said the festival had a long history and people celebrated it hundreds of years ago. The stories 7. (know) by the people make the festival more meaningful. He also hoped we can 8. (keep) the tradition alive.
On our way home, we watched beautiful fireworks in the sky. I thought they were the 9. beautiful I had ever seen. I believe 10. (celebrate) traditional festivals helps us know more about Chinese culture.

1. that
2. learned/learnt
3. happiness
4. that
5. surprised
6. about
7. known
8. keep
9. most
10. celebrating

1. 此处考查宾语从句引导词，think后接语义完整的宾语从句，用that引导，that在从句中不充当句子成分。
2. 此处考查一般过去时，主句动词said为一般过去时，从句描述妈妈小时候发生的动作，learn要变为对应的过去式learned/learnt。
3. 此处考查词性转换，and并列的前后词性需一致，前面的good luck是名词短语，因此要把形容词happy变为名词happiness，和good luck并列作介词for的宾语。
4. 此处考查固定结构so...that...，意为“如此……以至于……”，符合语境：我如此兴奋以至于拍了很多照片。
5. 此处考查固定搭配be surprised at，意为“对……感到惊讶”，修饰人表示“感到惊讶的”用surprised。
6. 此处考查介词，stories about the festival表示“关于这个节日的故事”，介词about意为“关于”，符合语境。
7. 此处考查过去分词作后置定语，stories和know是被动关系，用过去分词known，含义为“被人们所熟知的故事”。
8. 此处考查情态动词的用法，情态动词can后面必须接动词原形，因此填keep。
9. 此处考查形容词最高级，根据后面的I had ever seen（我曾经见过的）可知要用最高级，多音节形容词beautiful的最高级是the most beautiful，因此填most。
10. 此处考查动名词作主语，动词不能直接作句子主语，要变为动名词celebrating，作句子的主语，对应谓语动词helps。