It is dangerous for a car to go when there is a lot of this,because it is difficult to see.请问这是什么东西What's it called?

It is dangerous for you to play with fire.()()()()is dangerous for you. it is very dangerous to youit is very dangerous for you哪个对? it is dangerous for you___(cross)the bridg,为什么? careful It is dangerous .能否写成Carefully It is dangerous . the house is in poor c____.it'dangerous for us to live in.据首字母填空 It is dangerous for little children to swim in the river.为什么这里用to swim in,is,swim,children,to,river,the,dangerous,it,really,for连词成句. It is ()dangerous for children to climb a mountain为什么不能填pretty呢 It is dangerous ( ) jump into the pond.A.to B.don't C.for It is for children to play with fire at homeIt is ___ for children to play with fire danger 为什么dangerous不行有个词组不是 It is dangerous for sb to do sth It is dangerous ___children to play ____fire.A.for;with B.for;/ C.to;with D.to;/ Is it very dangerous?的中文意思 You must careful.It is dangerous.改错 it is dangerous on the road come ____ ,Liu Tao.it is dangerous It is a dangerous practice to sit on the motorbike___though it is cinvenient for ladies.A.sidewaysB.backwardsC.upwardsD.alongsidePlease explain and transform the sentence for me.Thanks. 是It is quite danger 还是 It is quite dangerous? .The fire is very dangerous .It is very important ________ with fireThe fire is very dangerous .It is very important ________ with fire.A.to careful B for careful C to be careful D be carefu