I hope you are OK after Carnival break. Students (5th level) are studying the uses and forms of “There is” and “There are”. In this wonderful blog you can find several entries, such as:
As you know, Internet is a tool full of resources where you can find a lot of online exercises. I have done the research for you, and these are the better pages I have found:
I hope it can help you in your learning adventure. Good luck!!!!!