解析：参考解析:原因状语从句的用法。题目前面说她没有参加昨晚上的聚会，后面给出了原因:她得完成期末论文。前后是因果关系，用because。故D为答案。A项If引|导条件状语从句，B项though引导让步状语从句，C项till引导时间状语从句，均可以排除。句意:昨晚她没有参加聚会，因为她得完成期末论文

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_________ with the size of the whole earth, the highest mountain does not seem high at all.

A. When compared

B. Compare

C. While comparing

D. Comparing

解析：参考解析:句中compare是及物动词，其动作的对象是句子的主语the highest mountain，为此须用表示被动意思的过去分词compared，而不能用现在分词comparing，故选A。

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By the time he arrives in Beijing, we ________ here for two days.

A. have been staying

B. will have stayed

C. have stayed

D. shall stay

解析：将来完成时 will have done
by+过去时间　用过去完成时
by+现在时间　用现在完成时
by+将来时间　用一般将来完成时

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Kevin is the only student in the class ______ failed in the exam.

A. who

B. that

C. which

D. whom

解析：参考解析:当定语从句的先行词前有the only，the very，thee last，the same等表示特定概念的修饰词时,定语从句的引导词只能用that，故选B。

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The more attention you pay to your study, _______ the study will be.

A. more easier

B. the easier

C. the more easier

D. easier as

解析：参考解析:固定结构"the+比较级...，the+比较级..."表示"越...，越..."。本题所缺部分为表语成分，故应用形容词easy，其比较级为easier，所以答案是B。

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He will ________ his sister by telephone on Monday.

A. contact

B. constitute

C. conflict

D. contend

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In most cases, the ________ of a person who sits on a pin is to leap into the air.

A. reaction

B. behavior

C. function

D. instance

解析：参考解析: reaction反应、behavior举止、unction作用,功能instance场合,情况.。根据题意，A、reaction为最佳选

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It is important to provide an environment __________ people are encouraged to make suggestions at all levels of the company.

A. from which

B. on which

C. in which

D. for which

解析：参考解析:定语从句。which引导定语从句时候，如果在从句中作介词的宾语，那这个介词应该提到which的前面，作为关系代词的一部分。本题中，in an environment是固定搭配，which引导的定语从句修饰environment时,连接词应为in which，其他介词不能和environment搭配。句意:提供一个能够鼓励公司各个层次的员工都能提出建议的环境是很重要的。

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I won’t complain as long as I ________ where I want to go.

A. will get

B. get

C. got

D. would get

解析：考点：从句题意：只要我能到我想去的地方，我就没什么可抱怨的
答案：get
解释：状语从句，虽然表示的是将来的事件，但由于是在从句中，用一般现在时表示将来的事件。

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