in the rivers 还是 in the river on the hill 还是 on the hills 什么时候用单数,什么时候用复数比如前面是不可数或单数的时候,后面是不是就不加s

Changjiang River is one of the longest rivers in China.为什么要用rivers the yangtze river idsthe longest river china yh eyangtze river is ----- ----- -------- rivers---- ---- ---- ----- rivers in china there are some fish in the rivers改为一般疑问句 any there rivers the park are nature in 连词成句哦~ We went to swim in the rivers or lakes beca 改错 Are their any fish in the rivers? there is two rivers in the city修改错误 可以是ChangJiang is the first longest rivers in China In summer.People often go swimming in the rivers and l_____. Swimming is p____ in all countries with the sea and in those with many rivers. the t____thing is water----water in the streams and rivers ,water in the lakes,seas and oceans andwater in you _____Changjiang River is among____longest rivers in the worldA.The;theB./;theC.the;/D./;/ The Yangze River is longer than any other rivers in China.填any other rivers对吗The Yangze River is longer than any other river in ChinaThe Yangze River is longer than any other rivers in China的区别 in the rivers 还是 in the river on the hill 还是 on the hills 什么时候用单数,什么时候用复数比如前面是不可数或单数的时候,后面是不是就不加s the Yellow River is one of the second longest rivers in China The Changjiang River is one of_(long)rivers in the world. There will be _____ pollution in the future.The rivers and air will be cleaner. We went to swim in the rivers or lakes because the weather was very ______.