Choose the right grammatical form in each gap to complete the text

Every year millions of people go to the museum to see great exhibitions and look at the most beautiful paintings in the world. Sometimes, you [needn't|to needn't|need|needn't to] go to the ticket office to buy a ticket. You can do it online or in the museum's application. But don't forget to download it before the excursion.

All of us know the rules in the museum. We [must to follow|must following|must follow|to must follow] them.

First, pay attention to your boots. Don't come to the museum in dirty boots. If you don't have shoes to change, buy special shoe covers or slippers at the entrance to the museum. A sign of a crossing camera means that you [must take|mustn't take|mustn't to take|mustn't taking] photos in the museum. You mustn't eat food in the halls. You [should to consume|should consuming|to should consume|should consume] your food only in special zones. The museums usually have small canteens or cafes for tourists. Also, you mustn't bring your pets to the museum. Some kids try to take small pets such as lizards, turtles and spiders with them. Don't forget that they're forbidden too. You [don't has to shout|to haven't shout|don't have to shout|haven't shouting] or talk loudly at the museum. The people around you enjoy watching exhibitions and they think about art. Also, it's rude to point to the paintings and exhibits.