The book was so interesting that he had read it for three hours he realized it.

A. before B. after C. until D. since

A 【解析】句意：这本书是如此的有趣以至于他意识到的时候已经读了三个小时了。before在…之前；after在…之后；until直到…时候；since自从。he had read it 是过去完成时态，空后realized是一般过去时态，主句的动作先发生，从句的动作后发生，再根据句意可知应选A。

The teacher speaks very loudly all the students can hear her.

A. so that B. because C. since D. when

A 【解析】试题分析：句意：为了让所有学生都能听见她，老师讲得非常大声。A.so that 是固定词组，引导目的状语从句时，表示“以便；为了”，从句中常使用can /could /may /might /will /would /should等情态动词或助动词，因此选A。B.because 意为“因为”.C.since 表示“自……以来，因为，由于”。D.when 意为“当……时”。所以，B...

Some school teachers complain that many kids haven't got any hobbies- we call playing computer games a hobby.

A. unless B. once C. since D. if

A 【解析】句意：一些学校的老师抱怨说很多孩子没有任何业余爱好，除非我们把玩电脑游戏叫做是一个爱好。unless除非，如果不；once一旦；since自从；if如果。根据句意可知应选A。

一Did you win the match last night?

一Not really. we all did our best, we lost it at last.

A. Though B. If C. Unless D. Because

A 【解析】句意：-昨天晚上你赢了比赛吗？-没有，尽管我们都尽了我们的最大努力，但是最后我们还是失败了。Though尽管；If如果；Unless除非；Because因为。根据句意可知，这两句话之间是转折的关系，故应选A。

（2017·四川德阳·33）My mother has taught in this school________ she was twenty years old.

A. for B. until C. because D. since

D 【解析】句意：我母亲从二十岁起就在这所学校教书。A. for为，后接一段时间；B. until直到；C. because因为；D. since自从，后接时间点。由句意可知D正确。

I'll never forget the town in which there a clean river and many big tall trees.

A. used to be B. used to have

C. was used to being D. was used to having

A 【解析】句意：我将永远不会忘记那个城镇，在那里曾经有一条清澈的河和很多高大的树。used to be过去有；used to have过去有；was used to being习惯于有；was used to having习惯有。这句话中使用的是there be句型，“有”，故排除B和D。used to +动词原形，表示过去常常做某事；be used to doing表示习惯于某事。根据句...

It's really him to drive after drinking so much wine.

A. crazy of B. gentle of

C. brave for D. wise for

A 【解析】句意：在喝了这么多酒之后开车，他真是疯了。crazy疯狂的；gentle温柔的；brave 勇敢的；wise明智的。根据句意可知，这样做是很疯狂的，选A。句中使用的句型是It is+形容词+for/of sb. to do sth.某人做某事是…的。形容词如果修饰后面的 to do sth.，用介词for；如果修饰人，则用of，这句话中的crazy是修饰him的，他很疯狂，所以介...

Huangguoshu Waterfall is beautiful that I want to come here again next year．

A. so B. too C. such

A 【解析】句意：黄果树大瀑布是如此美丽以至于我明年还想来这里。so是副词，“如此、这么”，后接形容词，so+形容词/副词+that+从句，这里beautiful是形容词；such+a/an+形容词+单数可数名词+that+从句或者such+复数可数名词/不可数名词+that+从句，这里不符合，故排除C；too太，后跟形容词或副词，但是不与that从句连用，故排除B；故选A。

一Look in the mirror. What happened your face?

一Oh, there's some ink on my face.

A. to B. on C. in

A 【解析】句意：-照照镜子，你的脸怎么了？-哦，我的脸上有一些墨水。to到…；on在…上面；in在…里面。这里是固定短语happen to…，意思是“…怎么了，发生什么事了”，故应选A。

a good virtue(德行)to be kind and honest to others.

A. This is B. It is

C. It has D. There is

B 【解析】句意：对别人友好、诚实是一个好的德行。This is这是…；It is它是…；It has它有；There is有…。这句话中to be kind and honest to others是动词不定式，它在句中作主语，前面应用It来作形式主语，不能用其他的代词，故选B。