______thesepictures,Icouldn’thelpthinkingofthosedayswhe...

问题详情：

______ these pictures,I couldn’t help thinking of those days when I was in Being

   and ______ from the top of a thirty-storeyed building,Beijing looks more

   beautiful.

   ng;seen     ;seeing       ng;seeing    ;seen

【回答】

A

知识点：非谓语动词

题型：选择题