"For how long do I have to do this for?" This does not sound right. The other two are good.

In the scenario I thought of in my head: I might go to the grocery store later. I might be going to the grocery store later. To me, these have the same meaning. Does the book provide any other information?

ADVANTAGES AND DISADVANTAGES OF HOSTING THE OLYMPICS

The Olympics is one of the most important events worldwide. Every four years professional athletes from all over the world face each other is in different competitions. For the competitors, it is a dream to win a gold medal at the Olympics and sing their nation’sal anthem, showing the world what they are capable of. Winning as many medals as possible is not the only dream that nations and athletes have when it comes to the Olympics. Many people want their country to have the opportunity to host an edition of (not required) the Olympic games. But, others believe that international sporting events of this magnitude might bring more problems than benefits, especially if this event is hosted in a developing nation.

Hosting the Olympic has many advantages, one of them is the economic benefits. A country which hosts the Olympics will see how tourism and the economy benefit from the event, because an event of such magnitude will not only attract athletes, but also tourists and the media who will give free publicity to the country. Also, investors will be interested on in investing their money in the city, and this will help create jobs that can revitalisze the economy. These jobs will not only be for the three weeks the Olympics last, but for all the years of planning. Besides that, an important event can create excitement and interest for such spectacle. This can promote sports through the country and volunteerism, which encourages a civic attitude in the population and this will definitely have social benefits.

However, there are also significant disadvantages when hosting the Olympics, one of them is the cost. To host a major event like this can cost lots of money, and (this money will not be given but the investors) (I don't know what you were trying to say here), it will be paid with the through taxes. This lead us to another disadvantage, the taxes will dramatically increase. People know that this might happen, but the taxes often increase more than expected. Also, many facilities that are specially built for the Olympics will never be used again or they will never get proper maintenance. Of course, this depends on what the local government plans to do to increase participation in sports practicing and the use of this these facilities. If things go as planned and expected, the nation can benefit from positive publicity, but if things go badly it can cause the opposite and not many people will choose it as their next destination.