英语完形填空,

4 Yesterday,I read an article about (traveling,动名词) in China.
介词about+doing.
5 It took the workers ten months (to build,不定式) the bridge.
it takes time to do,某事花某人多少时间去做.
6 Kunming is (known,过去分词,被动) as one of the most beautiful cities.
be known as,作为……而闻名.
7 Mandy is very (interested,感兴趣的,形容词) with me.
表示人的感觉.