___ most of the earth’s surface is covered by water, fresh water is very rare and precious.
A．As B．Although C．If D．Once
Helen was much kinder to her youngest son than to the others, ______, of course, made the others envy him.
A．who B．which C．what D．that
_____to reach them on the phone, we sent an email instead.
A．Fail B．Failed C．To fail D．Having failed
He let me repeat his instructions_____ sure that I understood what was _____ after he went away.
A．to make; to be done B．making; doing C．to make; to do D．making; to do
— It’s the classroom! So you ______ know eating is not allowed here.
— Oh, sorry.
A．need B．will C．may D．must
成都七中拟选拔一批志愿者，利用寒假到汶川希望小学为学生辅导英语。作为高二的学生，你希望参加此次活动。请根据以下提示，用英语给校评选组写一封申请信：
1. 你的认识（如本人、学生以及社会的益处等）；
2. 优势（如性格、独立生活能力、语言能力等）；
3. 你的计划（如怎样进行辅导等）。
注意：1. 词数不少于100；
2. 可适当加入细节，以使内容充实、行文连贯；
3. 信的开头结尾已给出，不计入词数。
参考词汇：汶川希望小学 Wenchuan Hope School
Dear Sir or Madam,
I am a Senior Two student in Chengdu No.7 High School._________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
Yours sincerely,
XXX
