the air and water are important ___us填什么介词呢?

the air and water are important ___us填什么介词呢? 英语二选一选择题.Air and water ( ) important.【is；are】 water and air are important _____ us ______ live. Rice,air and water ( )all important for us is or are 应该是is吧 Rice,air and water ( )all important for us is or are 不可数名词Air and water _____ important to us.谓语应该用is还是are? 词语填空：The sun,the air,the water are so important to us,w（ ） t my books are ()the shelf 应该填什么介词呢? All the water,the rice and the air ( )be important for us There are air and water on the Earth.air不可数,There be遵循就近原则,为 根据汉语写单词。小题1:Water and air are very important in our  __ there are air and water on the Earth.为什么要用are