Casie Meade
学生说明
1. Click the link to watch the video. 2. Tap to begin. 3. Choose your name. 4. Tap to retell how you are going to stop the germs. 6. Tap the twice to turn it in.
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to begin.
3. Choose your name.
4. Tap 
to retell how you are going to stop the germs.
6. Tap the 
twice to turn it in.
