Millions of people come to Mecca every year. These people are Muslims. Mecca is an important city to them.
Every Muslim should visit Mecca. There is a place in Mecca. Its name is Kaaba. This place is the most important place for a Muslim. People go around it and they pray. They must circle it seven times.
Difficult words: should (it is expected to do something), pray (speak to God), circle (to go around in circles).