男人，咳嗽并感染病毒，健康和新冠，在家服用治疗感冒或流感的药物。年轻男性，过敏和肺部疾病，医疗保健和哮喘，细菌感染和疾病。

生病的男人得了流感，在家喝茶咳嗽

生病的创业者在办公室打喷嚏

年轻女子咳嗽时握拳的肖像

男人在咳嗽

年轻女子感冒

生病的男人

心脏病发作、疼痛、健康问题的女性

年轻女性喉咙痛

年轻的棕发女性发烧

一位年长的、压力大、疲惫的人捂着鼻子，饱受鼻窦疼痛和疲劳的困扰

一位生病女性的肖像，她在擤鼻子

老年咳嗽和流感

痛苦的年轻英俊男子

生病的男人坐在家里床上擤鼻子

亚洲女孩没有食欲

男人在沙发上睡觉

心脏疼痛

穿着灰色夹克的学生，遇到问题

压力女子

男人测量体温

成熟男士心脏病发作的摄影棚拍摄

患有心脏病的年老妇女，手扶胸口，患有心动过速

年长男性，胃痛

看电视

女孩，学生，因课堂考试失败、成绩低和学业压力而感到压力。高中，对糟糕的成绩感到不快的人，或面临奖学金风险并因错误而失望的人

疲惫不堪，学校和男孩在教室的课桌旁，因写作作业、考试和测验而感到疲惫。大学、学院和

question hands up and student in classroom with answer for lesson learning and education university school and people listening

boy teacher and high five in classroom happy and goals with test results success and education at school teenager mentor and

school university and students in classroom listening for education lesson and learning happy academy and men and women at desk in

education teenager and smile with people in classroom for high school academy future scholarship entrance exams studying learning

教育，教师和学生在教室内回答学术问题、解决问题或获取知识。人们

女孩，疲惫不堪，在教室里带着笔记本睡觉，为了接受教育、发展和获得奖学金，在高中学习。学生

女孩，学生，因课堂考试失败、成绩低和压力性头痛而感到沮丧。高中

school college and people in classroom listening for education lesson learning campus academy happy men women at desk lecture

school happy and people in classroom listening for education lesson and learning university academy and men and women laugh at

education teacher and smile with people in classroom for high school academy future or scholarship entrance exams studying and

exam high school and teacher in classroom with paper test and assignment for education woman educator teenage students and exam

school college and teacher to help student for assessment assignment explain test question university academy educator with girl

question hands up and girl in classroom with answer for lesson learning and education university academy and people listening with

考试，高中生或课堂上的学生，感到压力，测试或未准备好完成作业。女教师，青少年女孩

question hands up and students in class with answer for lesson learning and education university exam and people with gesture

考试，高中和教室里的老师，有测试、纸张和作业用于教育。女教育家，青少年

教育、辅导及高中学院课堂学生协助，助力未来与奖学金。入学考试

question school and girl in classroom with answer for lesson learning and education university academy and people listening with

school university and people in classroom listening for education lesson and learning students academy and men and women at desk

教育、学生和课堂考试中的作弊行为，考试混乱、抄袭答案和奖学金风险。高中

hands huddle and solidarity with group of friends for strength support or unity from above circle chain trust people together

phone group and friends networking on social media mobile app or network for streaming online community people and students