1.[2020新高考Ι(山东),42]As well as looking at exhibits, visitors can play with computer simulations(模拟) and imagine (they) living at a different time in history or walking through a rainforest.
2.[2019天津,3]A study shows the students who are engaged in after-school activities are happier than who are not.
3.[2018全国Ι,70]If you are time poor, you need run for only half the time to get the same benefits as other sports,so perhaps we should all give a try.
4.[2018全国Ш,68]When the gorillas and I frightened each other, I was just glad to find (they) alive.
