Created byНиколай ESL English B2 Listening English Author's Instructions CGE Practice 903 My Google Classroom Courses × 0 classes selected (0 students total) Quick Access Select all classes (0 classes) All Classes Loading courses... Cancel Share Share to selected Course __COURSE_NAME__ __STUDENT_NAME__ (__STUDENT_EMAIL__) CGE Practice 903 Download Worksheet Validation Check my answers Emails my answers to my teacher Full name Group/level School subject Teacher's email or key code Close Submit Your answers have been sent to your teacher. Good luck! OK We encountered an error submitting your answers. Please try again. OK Advertisement | Go Ad Free Created byНиколай ESL English B2 Listening English Author's Instructions CGE Practice 903 Explore Worksheets CGE Practice 907 ESL B2 CGE Practice 907 Listening - ESL CGE Practice 907 CGE Practice 905 ESL B2 CGE Practice 905 Listening - ESL CGE Practice 905 CGE Practice 904 ESL B2 CGE Practice 904 Listening - ESL CGE Practice 904 Vaccines ESL B2 Vaccines Listening - ESL Watch the video about the three key phases of developing a new vaccine: exploratory research, clinical testing, and manufacturing. Answer the questions proposed by TED-ed
