根据句意及汉语提示填空 1. Driving carelessly ______

问题：

根据句意及汉语提示填空

1. Driving carelessly __________(引起) accidents.

2. It's our __________(职责) to save our earth.

3. They think walking is a good way to relax __________(他们自己).

4. Germs can get into the human body __________(通过) the skin and the mouth.

5. Xu Xiao taught himself on the __________(互联网).