In the _________past, the Antarctic was covered by plants.(遥远的)
In the camp, we’ll teach you ________ skills. (生存)
Traffic in many cities is heavier as many people are a__________ to their cars.
Traffic is one of the major causes of global w_______ and climate change.
The school sports meet will be held according to the s___________.
Swimming not only b______ our health, but also helps us have a strong will.
