look!there are a lot of fish in the lake.——are swimming happily

look!there are a lot of fish in the lake.——are swimming happily
look!there are a lot of fish in the lake.——are swimming happily

look!there are a lot of fish in the lake.——are swimming happily
这里填写代词,复数形式的,因为前面写了,有很多鱼在湖里,所以后面是代词They,他们游的很开心
希望对你有帮助哦~

They

They