1.The floor must be cleaned every day.(改成一般疑问句）（ ）the floor ( ) ( ) ( ) every day?2.Children ( ) to tell the truth应该教导儿童讲实话（提示是用被动句的）就不知道教导该用什么我第一问有三个空诶 二楼乱写啊 must是情态动词，变疑文句，应该提前的呀，怎么出现了does 我也不太清楚

1、Does the floor must be cleaned every day？原句用的是一般现在时的被动语态，该成疑问句句首要用助动词。
2、Chindren should be taught to tell the truth.teach的意义很广泛，有教育，教学，教导等含义。taught为teach的过去分词。

1。have ，to be cleaned ，must做情态动词不用于疑问句的啊，要用have代替的。 2.should be taught

(must)the floor (be)(cleand)every day?
should be taught

1.Does must cleaned
2.must be taught
一般疑问句一般是以DO或DOES开头

must ，betoclean，guiden

1.does，must，be，cleaned
2.should be taught

Must the floor be to cleaned every day?
should be taught

does need be cleaned
should be taught

(1)第一空Have 后面三个to be cleaned.must在翻译疑问句中应该用have，此处have做实意动词。
(2)should be tought.tought是teach的过去分词。