77．December is the t______ mouth of the year.

76．It’s too hot. Let’s go s_______ in the river.

75．He lives next to my home, so he is my n_______.

74．Today is May 31, tomorrow will be C ______ Day.

73．She often listens to light music to _______(放松) after work.

72．The restaurant owner has learned how to make money from _____(科学的) studies.

根据句意及首字母或汉语提示，填写句中所缺的单词。

71．Do you think John can learn Chinese well ______(容易地)？