答案：
C

a. submit
vt.提交，呈递(文件)
例:Applicants should submit their applications online by the end of the month.
(申请人必须在月底前网上提交申请。)
applicant
n.申请人
b. report
vi.&vt.报告
report on sth
就某事提出报告
例:Kevin reported on the results of the survey to the manager.
(凯文向经理报告调查结果。)
c. outstanding
a.杰出的
d. leave
n.休假，假期(不可数)
take sick / maternity / a month's leave
请病/产/1个月的假
be on leave
在休假
be on sick leave
在病假中
例:How much annual leave do we have?
(我们有多少年假?)
Sharon took a month's unpaid leave to visit her grandmother in France.
(莎伦请了I个月的无薪假去法国看她奶奶。)
Edward is on sick leave today. May I take a message?
(爱德华今天请病假。需要我帮您留言吗?)