i __am sorry___that i won't be able to __take__you to the Great wall tomorrow.I am _busy___preparing for my thesis presentation now. i hope that i __can__make it up the next time you _come___ to china.


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祝学习进步一空填一个accompany.第一个填什么好regret / think 都可以第二空可以是accompanyplease allow me express my gratitute for you help during my stay in US.I am looking forward to seeing you again _____herein China.请问空缺处填什么单词，只能填一个。这是填sometime吗可以， 表示一个不确定的时间