Attention, please! The participants (参会者) seated at the back of the assembly hall, keep quiet, ________?
A.do you B.aren’t they C.will you D.don’t they
By the time Mike retires from the army, his son ________ from college.
A.graduates B.has graduated C.had graduated D.will have graduated
It’s her ________ of time to medical research that helped Tu Youyou win the Nobel Prize.
A.supply B.respect C.devotion D.arrangement
This news of UFOs was immediately ________ due to lack of hard evidence.
A.applied B.assumed C.dismissed D.discouraged
Lego is considering its products’ rental plan, ________ purpose is to reduce plastic waste.
A.whose B.that C.which D.of which
假设你是第一中学的高三学生李华，你们城市将在下月举办运动会，招募中学生志愿者。请根据以下内容要点，用英语给该组织负责人写一封申请信：
内容要点：1. 介绍个人情况；2. 个人优势；3. 表达期望。
注意：1. 词数：100左右；2. 书信格式已经给出，不计入总词数；
Dear Sir or Madam,
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Yours,
Li Hua
