close to， go off， pay attention， get lost， set off， be careful of


______ ， please． You have to follow me．

Hiking is a great way to travel． You will get ______ nature and take exercise．

We will have to ______ early to avoid the heavy traffic tomorrow morning．

______ the falling stones when you are going rock climbing．

The litter girl ______ in the dark forest． She began to cry．

The guide told us not to ______ on our own during the travel．