Plants need 二氧化碳when they grow,so they can make二氧化碳 ____(少) in the air.这个空为什么填less而不是a little呢?

Plants need 二氧化碳when they grow,so they can make二氧化碳 ____(少) in the air.这个空为什么填less而不是a little呢? Plants need __(hot) why do we need plants some l plants need [.]怎么排? What do plants need?(按实际情况回答) plants need water句子的基本形式 the pumpkin plants need water and sunlight. Most plants need sunlight just ____they need water A.because. B.when. C.as. D.for 答案...Most plants need sunlight just ____they need waterA.because. B.when. C.as. D.for答案是C,为什么?ACD用法上有什么区别?还有B也解释得通 All animals need air and ___ .B.so do plants C.so need plants All animals need air and so do plants.为什么不能用so need plants. All animals need air and ___B.so do plants C.so need plants 1.All animals need air and ___ .A.so need plants B.so do plants怎么判断need在这儿是实意动词还是情态动词呀?选哪一个呢?另外一个为什么不对呢?2.I suppose she __ be about fifty when she died.A.would B.may C.should3.If you do plants and animals need water____(grow,to grow) all animals and plants need water改为一般疑问句 Some of the plants need p----- against the weather.填词 the biggest problem for most plants ,which___just gei up and run away when yhreatened, is thatanimals like to eat them A shall not B can not C need not D must not 为什么选B 1. All animals need air and ___ . 麻烦问下下面几个选项 是什么时候用的A. so plants do B.so do plants C.so need plants D.plants are so most plants need lots of water的同义句Most plants need_____ water.(只填一个单词）