it is a serious problem.we can't decide ____ Mr Harris comes back.a.while b.since c.until d.so选哪个~解释下~

It's high time that we all__.A:took it seriously B:took is serious B:take it seriouly D:take it serious 选哪个 翻译句子；how serious it is. 反义疑问句it's nothing serious ,is it 还是it's nothing serious,isn't it He doesn't feel well.He has a cold.__________ .Is it serious.填对话 HIN1 is a serious s----- and we should be more careful with it. Nothing is serious,is it/isn't it 英语题 it is said that_water pollution all over the world is very serious. A.the B.aC.不填 Love is a serious mental disease. the___(library)is a very serious woman. A：There's something wrong with Mike's right leg.B:Is it serious?A:Not very,....请问..为什么. There is ＿＿＿＿ with him.A.anything serious B. serious nothingC.serious帮帮手啦!初二英语 There is ＿＿＿＿ with him.A.anything serious B. serious nothing C.serious something D. nothing serious GMAT GWD 第一套语法Surfur dioxide,a major contributor to acid rain,is an especially serious pollutant because it dimkSurfur dioxide,a major contributor to acid rain,is an especially serious pollutant because it diminishes the repiratory system's That is quite a serious problem.Do you think going to war can solve it.的意思 英语试题,I haste to tellyou that your son is not badly hurt,although it was a serious accident. The accident caused some____to my car,but it is nothing serious.A.harm.B.injury.C.ruin.D.damage. --Is Kate serious?--I _____.She never means it.A.suppose.B.agree.C.believe.D.wonder. xiexieI was driven by a ____ to learn and determined to be ahead of my classmates .A．desire B．wish C．hope D．expect Now we realize _____problem of pollution is.A．so serious a B．how serious the C．such serious a D．what serious It was the it will prob sell for like 1,000 bucks 这个prob用的对吗?