高中名词性从句练习As far as I remember,it was four days ago _____ the tall engineer came here to check the air conditioner.A.when B.that C.until D.since—What do you think of the news _____ that young man provided?—It is a big lie.He did

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高中名词性从句练习
As far as I remember,it was four days ago _____ the tall engineer came here to check the air conditioner.
A.when B.that C.until D.since
—What do you think of the news _____ that young man provided?
—It is a big lie.He did so just to be able to show up in TV.
A.what B.which C.whom D.when
It is not certain _____ effect the medicine have on the disease.
A.how B.what C.which D.whose
The central government made a wise and historical decision _____ they decided to develop the vast west of China.
A.that B.which C.whether D.if
The boys in her class are so naughty that the new teacher just does not know _____ she should deal with them?
A.why B.how C.where D.what
Are you certain _____ the young girl has said is true?
A.that that B.that what C.of which D.about what

咱给你回答一下!
1.B it was ...that 是强调句 强调four days ago
2.B 这是道定语从句的题 因为 the news 作provided的宾语 故用which 记住:同位语从句一般不能用which引导.
3.B.是what引导的主语从句 it是形式主语.全句的意思是:这种药对这种疾病有什么效果还不确定.
4.A.同位语从句 wise and historical decision .
5.B.不知道她应该怎样对付他们 意思最通 引导的是宾语从句
6.B.Are you certain {that [what the young girl has said ]is true}?
that引导{}中的宾语从句 what引导[]中的宾语从句中的主语从句.what的意思是:...的话