Dear Millie,
You asked me about the Chinese dragon—the loong. Now let me tell you something about it.
China is known as the “home of the loong”. The loong is considered to be ____41____ (luck) and wise. It is ____42____ big part of China’s history and culture. In traditional Chinese culture, the loong has superpower. Ancient people ____43____ (believe) it controlled the weather, especially rain. So, if there was a drought (干旱) or a flood, people would pray (祈祷) to the loong ____44____ (have) better weather and live a peaceful life. ____45____ this reason, there are lots of activities of praying related to loongs. Dragon-boat racing ____46____ the dragon dance are the most common ones.
The loong is also one of the 12 animal signs. It is the ____47____ (five) animal sign. People born in the Year of the Loong are thought to be natural ____48____ (lead), full of energy and creativity. Many Chinese parents hope that their children ____49____ (be) successful and powerful in the future, just like a loong. This is shown in the saying “Wang zi cheng long”.
In a word, the loong ____50____ (love) widely by Chinese people and can be found everywhere in Chinese daily life.
Lots of love,
Wendy
解析：
41题：词性转化（名词变形容词）
The loong is considered to be ____41____ (luck) and wise.
and 并列前后一致，wise是形容词，所以用lucky
42题：冠词
It is ____42____ big part of China’s history and culture.
无提示，空格后是短语，冠词或介词，很明显龙是中国文化的一部分，用a
43题：动词 谓语
Ancient people ____43____ (believe) it controlled the weather, especially rain.
可能部分人会因为controlled的出现，把这里的believe当成非谓语，这是因为学的时候只记住了我们说的一句话有一个主语+一个谓语，忽略了从句的存在，也忽略people和it这两个名词，如果再简单一点就只要记住句式sb believe/hope/think (that)+从句，根据已知动词controlled，所以用believed
44题：动词 非谓语
So, if there was a drought (干旱) or a flood, people would pray (祈祷) to the loong ____44____ (have) better weather and live a peaceful life.
if引导的从句不用看，谓语动词would pray，所以have非谓语，为了有好天气而祈祷，所以用to have
45题：介词
____45____ this reason, there are lots of activities of praying related to loongs.
无提示，空格后是短语，冠词或介词，冠词在42题考过，且有this存在，所以考介词，所以是For表原因，注意开头字母大写
46题：连词
Dragon-boat racing ____46____ the dragon dance are the most common ones.
无提示，空格后是句子，连词或从句，Dragon-boat racing 和 the dragon dance并列作主语配合后面的谓语are，所以用and
47题：数词
It is the ____47____ (five) animal sign.
数词最常见的就是基数词变序数词，偶尔还会有整十的复数，这里数词前有the，所以用fifth
48题：词性转化（动词变名词）
People born in the Year of the Loong are thought to be natural ____48____ (lead), full of energy and creativity.
空格前是形容词，修饰名词，名词考察单复数，所以用leaders
49题：动词 谓语
Many Chinese parents hope that their children ____49____ (be) successful and powerful in the future, just like a loong.
that后是从句，缺谓语，时间短语in the future表将来，所以用will be
50题：动词 谓语
In a word, the loong ____50____ (love) widely by Chinese people and can be found everywhere in Chinese daily life.
and并列两个谓语，by被动的标志，已知动词can be，所以用is loved
