__he come,the problem would be settled.A.Would B.Should C.Shall D.If为什么?固定句式是怎么构成，怎么用的？

关于关系代词和关系副词This is the way ____he worked out the problem.This is the way __he used to worked out the proble.分别填什么? __he come,the problem would be settled.A.Would B.Should C.Shall D.If为什么?固定句式是怎么构成，怎么用的？ The exam was __he didn’t pass it. 完成下列宾语从句 1 i think__you will like the photos2 they worry about __they will get there on tim3.he said __he could finish his work before dinner 4.I‘m not sure__he will come tomorrow 改错：The maths proble is too difficult.Little students can work it out . 改错：The maths proble is too difficult.Little students can work it out .请说明原因 The reason __he explained for __he was late again was not so believable(填why/which/that) would you like to come to my birthday party next Sunday?I 'd love to,_ i can'tA andB becauseC soD butNOW the air in our hometown is__ than it was before ,and we must do something for that.A much betterB more worseC more betterD much worseThese proble THE problem is very diffcult.he can't work it out .（合并）THE proble is ____diffcult ____him ____work out 适当形式填空 (give) more time,the scientists will be able to work out a home solution to the proble the proble is different.I can't work it out the problem isn't easy ()for ()to work out Please send me an email if you have __(diffcult)solving the用适当的词填空 proble Did J ack come back early last night ---Yes,It was not yet eight __he arrived home.A that Bwhen the knife __he cut the bread is very sharpwith whichwith it with that which The teacher praised him for __he hade madea progress/the rapid progress大家帮个忙啊, 英语感叹句转换He drives the car very fast.__ __he drives the car! __he thought he was helping us with the work he was acturally in the way 为 the book __he bought yesterday is very interesting. a./ b.why. c.when. d.what