英语 It is (know)to all that "su danhong"does harm to our heal

It is （know)to all that smoking too much is bad for our heal It is k___ to all that "sudan I"("苏丹红1号") does harm to our h We all know __________（污染） air does harm to our health.It’s the result shows that the bad habit will do harm to our heal Although fast food is t_____,it does harm to our health. we all know that it is important to protect our teeth It is believed that smoking does harm to health =Smoking is_ lt is known that smoking does great ----[harm]to us. 英语句子it is known to all that our teacher is beauful英语句子 It is our desire that every effort _______ to protect the su _________(污染）air does harm to our health,it's necessary to k Smoking does harm to our health,which is known to everyone.w