This experiment is so dangerous .I must have Jack ——— it A.make B.to make C.made D.making

This is 什么 want for the experiment the experiment is going to by larry's wife (test ) ._____ this experiment is not difficult .(为什么是to do 不是doing! Kong's new experiment in Chinese folk music ...Kong's new experiment in Chinese folk music is so important to him that he even changed his appearance. it's uncertain ______ the experiment is worth doing为什么不能用that With such a short time(leave)______,it's impossible for US to finish this complicated experiment. I find this experiment is（）for us to do.AI find this experiment is（）for us to do.A:enough easy B:easy enough C:enough easily D:easily enough 为什么This is不能简写This's _____ this experiment is not difficult.A.Having done B.Being done C.To do D.Done This is Emma's family< > this is Kyra's mom this is not will`s This is you?thats ( ) 正在做实验的那个女孩是汤姆的妹妹 The girl ____ ____doing an experiment is Tom's sister. My favourite class is< >because I like to do an experiment括号里应该填什么s打头的英语单词 It's uncertain ______ the experiment is worth doing.A.if B.that C.how D.whether do,ants,let's,experiment,an,on 1.Describe something that is not matter.What characteristics is it lacking?(8 points)2.Why was Rutherford’s experiment so important to the understanding of the structure of an atom?Does this model still fit what we know about the structure of an at