By Matthew Anderson, C. Commons

Paco is doing some sightseeing in Toronto. Today he is going to the CN Tower. This is considered to be the city's landmark and, therefore, one of the major attractions of the city. It is approximately 550 metres high so you should use the elevator if you do not want to get exhausted visiting the different levels of the tower.

The building of this tower was necessary in order to solve communication problems. There were too high skyscrapers where the television and radio reception was not good enough. Normally, a high tower must be used in any city with tall buildings. Today it has become one of the main tourist attractions of the city.

There are many possible activities in the tower to choose from but you do not have to do all of them. In fact, there is a range of packages from the most complete and expensive one to the most basic and cheapest one. If you are interested in getting the most of this tower, you should buy the Total Tower Experience ticket, which includes activities such as a film or a motion theatre ride. Obviously, you do not have to get this package necessarily. If you must be careful with your expenses, you should buy the Observation Experience, which includes the most interesting parts of the tour: the Look Out, and the Glass Floor. You have to buy the tickets at the box office if you have not bought them online.

The Glass Floor is exciting because one has the feeling of walking on the air at a very high distance from the ground. Of course, you should not walk on this place if you are afraid of heights!

As a final point to mention, of course, you must not smoke inside the building. Paco has no problems with this: he hates tobacco!

A) Identify all the modal verbs that appear in the text

B) Find a word in the text for each definition:

1- Going about to look at places of interest

2- A very tall building with many storeys

3- A collection of related items, especially one to be considered together

4- Filled with fear or apprehension