The Yellow River,___to be 'the mother river',runs across China like a huge dargon.为什么答案是said而不是being said?

why is the Yellow River yellow? The Yellow River is the second ___(long)river in China.用括号内的单词的正确形式填空 The Yellow River is shorter than Changjiang River.The Changjiang__the Yellow River.写同义句! the yellow river the yangtze river要不要大写? The Yellow River is the second（ ）river in China. Which is longer?The Yangtze River or The Yellow River? ls the changjiang river longer than the yellow river?回答 the Long River is l____than the Yellow River.首字母填空 is the chuangjiang river longest than the yellow river? Yellow River flows into,the estuary is Yellow,yellow,yellow,Yellow is beautiful,Just like my house near the river.啥意思? is the changjiang river longer than th yellow river? Shenzhen is __ __city in Guangdong province (new) The Yellow River is ___ ___the Changjiang River.用比较级,最高级The Yellow River is ___ ___the Changjiang River.(short)Tom is one of____ ___boys in our class.(tall)The sun is much ___ __ the oth The yellow River is——than the Yangtze RiverThe yellow River is——than the Yangtze River. Yellow River前加不加the?不是说江河湖海前不加the么? the yellow river goes __ the city of lanzhou can you see the yellow river （）the map The Yellow River is the second______in China. AloThe Yellow River is the second______in China.Along. Blonger. Clongest Dthe longest