It is said that Beijing University was the first

It is said that Beijing University was the first it is said that that was how the chinese first raised silk w It is the first time that she ______ Beijing. Is it the first time that you ____ Beijing? He told me that it was the first time that he _ _to Beijing it is/was the first time that有什么用法 It is said that that was all that he said. he said that he had graduated from beijing university,__ was It is said that the It is said that the Olympic Game _______in Beijing in 2008 w It is said that the first land on the moon is____ American it was the first time that I had seen the sea和it is the firs