We shouldn't take         for granted that we still have a lot of time before the Entrance Examination.

this

that

it

such

考查代词。句意：我们不应该想当然地认为在高考前我们还有很多时间。这里涉及了一个固定句型take it for granted that 认为.....是理所当然的，该句型中it 作形式宾语，真正的宾语是后面that引导的从句。故选C项。

Though ____ the dangers of smoking to their health, smokers still find it hard to give up smoking.

aware of

are aware of

be aware of

考查状语从句的省略：句意：虽然很多经常吸烟的人已经意识到抽烟对他们健康造成了很严重的后果，但是他们仍然发现很难戒烟。Though引导的让步状语从句是省略句，完整的句子是：though smokers are aware of the dangers of smoking to their health。当主从句的主语一致的时候，可以省略从句的主语和be动词，选B

Wouldn’t it be         wonderful world if we lived in         harmony with nature?

a; /

the; /

a; the

the; the

考查冠词和短语。句意：如果我们与自然和谐相处，这不是一个美好的世界吗？第一个空中，world表示泛指，应用不定冠词且wonderful发音为以辅音音素开头的单词，故应用a;第二空短语in harmony with表示“与....和谐”，中间不加冠词。故选A项。

So difficult __________ it to work out the problem that I decided to ask Tom for advice.

 I did find 

did I find

 I have found  

have I found

句子使用的基本句式为so…that…结构。按英语语法，当该结构的so…置于句首时，其后的句子(主句)要用倒装语序，如：So loudly did he speak that even people in the next room could hear him. 他讲话声音那么大，隔壁屋里的人都听得见。

---Where is Class       ?

---It’s on the       floor.

Six; third

Sixth; third

Six; three

Sixth; three

考查数词辨析。句意：----六班在哪里？---在三楼。英语中表达序号时，如果用基数词表示：名词+基数词，如六班，Class Six;如果用序数词表示：the+序数词+名词，如三楼，即the third floor。故选A项。

Lucy tried to help, but she was          as if she was  interfering, not helping.

dynamic

compulsory

scared

clumsy

考察形容词。句意：露西想要帮忙，但她笨手笨脚，好像在干涉别人，而不是在帮忙。A.dynamic动态的；B. compulsory 义务的；C.scared 害怕的；D.clumsy笨拙的。结合后文好像是在干涉别人，而不是在帮忙。可知露西笨手笨脚的。故选D项。