五、Read and write.(读一读，写一写。)
“时光社区”正在举办“校园变迁”视频展！Shelly上传了一个介绍学校变化的
视频,引发了朋友们的热烈讨论。大家在评论区里感叹过去与现在的不同。请阅读下方的评论,在括号里圈出正确的单词,帮他们完成留言。

Comments
—Wow! Your school (was/is) cool! There (was/were) no library before, right?
—I like the new gym. We (didn't/don't) have a gym in the old days. We (run/ran) outside.
—Great (change/changes)! The school (was/is) very small years ago, but now it (was/is) big and beautiful.

is; was; didn't; ran; changes; was; is