短语作状语，描述一种状态，即"潜心于研究工作"，故填devoted。

　　4．Please pass the papers on to the students ________(seat) at the back of the classroom.

　　答案：seated　分析句子结构可知，设空处作定语，修饰the students，因此用所给词的形容词形式表示"入座的，就座的"这种状态。故填seated。

　　5．Sales director is a position ________communication ability is just as important as sales skills.

　　答案：where　设空处所填词引导定语从句，指代表抽象地点的先行词position，关系词在从句中作状语，意为"在此职位上"，故填where。

　　6．In ________(come) the headmaster, followed by a group of students.

　　答案：came　表示方向的副词位于句首，且句子主语为名词，句子应采用全部倒装结构。

　　7．He tried to run away but gave up when he found himself ________(surround)．

　　答案：surrounded　本句中宾语himself和surround存在被动关系，应用过去分词作宾补，故填surrounded。

　　8．The old man got on the bus, ________(support) by a girl.

　　答案：supported　the old man与support之间为被动关系，故填过去分词supported，在此处作方式状语。

　　9．He is always ready to take ________heavy responsibilities.

　　答案：up　take up "开始担当(新的责任)"。take up responsibility "承担责任"。

　　10．No one in the carriage had ________(previous) spoken to the ticket owner before.

　　答案：previously　句意：事先车上没人和这个持票人说过话。副词作状语修饰动词短语had spoken to。

三、完形填空。

　　There was once a widow who had two daughters.The __1__ widow loved the elder who was like herself both in looks and personality，but didn't love the other，who resembled her __2__，although she was pretty and friendly.

　　The younger daughter had to __3__ hard all day and live upon the leftovers of her elder sister.Among her other __4__ jobs，she was forced to carry water every day __5__.

　　One day __6__ she had just filled her pot at the fountain，an old trembling woman asked her for a drink of water.Glad to show a kindness to the old woman，she __7__.

　　Now，all of a sudden，there was no old trembling woman but a(n)__8__ who rewarded good deeds before her."Your face is pretty __9__ your heart is gentle，" said she."For your kindness，I will make you a gift.Every time you speak，from your mouth shall come a flower or a jewel."

When the girl reached home，her ill mother __10__ her for her long absence."Pardon me