1.If you want to learn english we,it is not half important t

1.If you want to learn english we,it is not half important to know some rules ( ) it is to have more practice
A so B as Csince Dthat
2.The marriedcouple regularly discussed the life habits they find( ) in each other
A they were annoying Bannoying C annoyed
3.The question that pnzzled them is( )they can get rid of the air pollution
Ahow is it that B that how CHow it is that

1.If you want to learn English well,it is not half important to know some rules ( ) it is to have more practice.
选择：A.so
解析：
* 句中短语 not half 意思是“一点儿也不/根本不/极不”,
* 句子结构
--前提条件：If you want to learn English well 如果想把英语学好
--提出理由：it is not half important to know some rules 懂得一些规则是一点儿也不重要的
--得出结论：so it is (这里丢掉了表语,如：necessary,important,essential) to have more practice.因此进行更多的练习才是（首要的）.
2.The marriedcouple regularly discussed the life habits they find (annoying) in each other
选择：B.annoying
解析：
* 句子结构
主句——The marriedcouple regularly discussed the life habits
定语从句——(which) they find annoying in each other,等于 they find the life habits annoying in each other
* 从句所用句型—— find sth.+ 宾补（表示特征的分词）,意思是“发现某事物具有某种特征”
* 选项抉择
A.选择 they were annoying 就成了动词 find 的宾语从句,这样的结果不仅使得这个从句与省略的关系代词成分重复,而且意思也发生了冲突,究竟是发现了生活习惯还是发现这种生活习惯令人烦恼呢.
B.现在分词 annoying 表示事物具有的特征,本句中指的正是他们发现在相互之间生活习惯令人烦恼.
C.过去分词 annoyed 表示人处于苦恼的状态,但是 find 后省略的宾语指的是生活习惯,而不是已婚夫妇.
3.The question that puzzled them is (that how) they can get rid of the air pollution.
选择：B that how
解析
* 句子结构
主句——The question is that… 问题是…
主句中的定语从句—— that puzzled them 使他们迷惑不解的（问题）
表语从句 how they can get rid of the air pollution 他们怎么样才能摆脱空气污染
* 选项抉择
选择 A.how is it that how they can get rid of t选择C.How it is that,意思指的却是“怎么样才能摆脱空气污染这件事是怎么样的”,与主句意思不合.