1.Have all the students known that our class will visit the

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1.Have all the students known that our class will visit the factory this afternoon?---Yes.Every student___about it.
A.have told B.have been told C.has told D.has been told
2.The war ______many days.
A.was lasted B.last C.has been lasted D.lasted
3.Our workshop______since two years ago.
A.was opened B.opened C.has been opened D.has opened
4.Your mother is badly ill.She'd better ______right now.
A.be operated on B.be operated C.to be operated D.to be operated on
5.The pen _____well.It_____well,too.
A.writes,sells B.is written,is sold C.writes,is sold D.is written,sells
6.All the new words require______by heart.
A.learn B.learned C.be learned D.to be learned
7.The environment need______by each of us.
A.protecting B.to protecting C.protected D.be protected
8.I know she won't come to join us unless she _____to.
A.tells B.has told C.is told D.was told

1、D
2、D
3、C
4、A
5、A
6、D
7、A
8、C
无疑后请采纳.
书山有路勤为径,学海无涯苦作舟.
-----------与君共勉-----------
再问：能和我讲一下理由吗？谢谢
再答： 1、every student 是单数，用三单，排除AB，每个学生被告知，用被动。 2、last 当【持续】讲时是动词，这场战争持续了很多天。不用被动，排除AC，如果是现在是，B至少得用三单。排除B 3、有since，用完成时，而且动词要使用可延续性动词，open 延续性的为be opened 4、sb had better do sth 某人最好做某事，后面用原形。排除CD，此时operate on，词组on不能省略。 5、这笔写起来很好，它卖起来也很好。当表示事物的品质特征时候，用主动语态表被动。 6.sth require to be done=sth require doing 某事需要被做。 7.need doing =need to be done 需要被做。 8.unless引导的条件状语从句，使用主将从现。太多了没办法太细说，有不明白的继续追问吧。
再问：好的。不过你能保证你讲的答案全对吗？如果能，我就继续问啦。 1.Usually computers______to search the Internet. A.use B.are using C.are used D.used 2.Trees and flowers______every year to make our country more beautiful. A.is planted B.was planted C.are planted D.were planted
再答：疑人不用，用人不疑。 1、be used to do sth 被用来做某事 2、C evey year 每年，因此用一般现在时，排除BD 树和花都是被种的，用被动语态。而且都用了复数，所以用are

1.Have all the students known that our class will visit the Have all the students known that our class will visit the fa ——Have all the students known that our class will visit the -----Have all the students known that our class will visit t Have all the students konw that our class will visit the fac have all the girls in our class known that they will have a The students _____that our class will visit a water treatmen 英语句型转换.1.All the students in our class are going to have a c 应该选B是吧?All the students ____ come from Class Five will visit Our teacher said that all the students in our class ______ t _____,all the students in our class have passed the exam ______,all the students in our class have passed the exam