I'll tell you the answer to number 2, because it's a difficult and irregular one. 2. Nobody knows about this, do they? The rest are very simple and straightforward - if you are learning about tag questions there's no reason why you can't do these yourself. You don't learn anything by asking people to do exercises for you. Here's a reminder about the formation of tag questions: 1. Use the same auxiliary verb as in the main sentence. 2. If it's positive in the main sentence it should be negative in the tag and vice versa. 3. Add the pronoun relating to the subject of the main sentence - he/she/it etc 4. Add a question mark. Now you try.

1. isn't there 2. do they 3. is there 4. had she 5. weren't there

Note also that there is no word "alot ". It is two words: "a lot".

There are numerous ways to end these questions. You can end by giving a location, ask for confirmation or imply what the answer should be, or even a name if speaking to someone. What matter is what you are trying to imply or say. So for example: There is enough food here for everyone, Alyona? There is enough food here for everyone, right? There is enough food here for everyone, no? (implies the answer should be yes, intonation matters on this one. Same meaning as the above example). There is enough food here for everyone, alright? Some of them are more limited, like 2 and 3, but still have multiple possible endings.