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

National holidays [is usually associated|isn't usually associate|are usually associated|are usually associate]with bright and colourful shows which are fascinating every time for both residents and visitors. Such events [are expect|are expected|is expected|is expecting]with great impatience. People can carefully prepare for them for a whole year.

The history of national holidays (parades, carnivals, festivals, torchlight processions) has its roots in centuries. Nowadays people return to these roots again: they sew luxurious costumes, make colourful decorations and props, play different characters, listen to traditional music. Sometimes, up to several thousand people can take part in an event: musicians, actors, dancers, singers, acrobats and ordinary citizens, who want to maintain the tradition.

Of course, celebrations [are not missed|are not missing|are not miss|be not missed]by the tourists. So, the most interesting world festivals and celebrations not only give a possibility to celebrate and have fun but also attract travellers to the country. That is why the money, that [is invested|be invested|are invested|is invest]in such events, [are always paid|is always paid|is always payed|be always paid]off and every year the festivities become more widespread and colossal.