1()If a book is in English,___may mean slow progress for you

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1()If a book is in English,___may mean slow progress for you.
A.which B.as C.that D.and it
选哪一个,为什么
2（）___five minutes___befor the last bus left,we arrived at the station.
A.there were;to go B.with;to go C.It was;left D.It had;left
选哪一个,为什么
3()I__in the countryside for five years,which helped me a lot as a guide now.
A.have been teaching B.have taught C.taught Dhad taught
选哪一个,为什么
4()If we go on using enery so wastefully,__are that our oil wells will be dried before new energy source can be found to replace oil
A.charce B.diffculties C.questions D.problems
选哪一个,为什么

1.选C,前面是一个从句,所以后面必须是一个主句,空格缺的是一个主语,所以选择C
2.选B,毫无疑问,后面we arrived at the station.是一个完整的句子,所以前面只能是一个状语的成分
3.选C,因此根据后面which helped me a lot as a guide now说明我在乡下教书已经是过去发生过的事情了,因此要用过去式,这个地方侧重点在事情发生过了,不要被 for five years迷惑了
4.选D,problems翻译为问题（由此造成的不好影响）,根据后面主句的意思.

因逗号误判which(1) If a book is in English,_____ means slow progr 状语从句中,主句主语if a book is in english ,( ) means slow progressed 1 .It is very ____ when you can’t say what you mean in a for if you go in wrong dierection,stop is progress! You might as_______some progress in English.A.good;making B. 英语翻译Is that ok for you if I book you a flight on Sunday?Like Hi,I'm a slow Chinese typer,so if you can read my English,th ---Where is my English book?----I___it for you tomorrow.A.ge Only in this way ___ make progress in your English.A.you B.c Reading more English book is very good for you is,an,english,for,you,book,here 连词成句 The book with the red cover is a grammar book.You mean( )