The International Workers’ Day, sometimes     1     (call) Labour Day or May Day, is not only a celebration of workers’ rights, but also a seasonal celebration in many countries. The holiday is a     2    （celebrate) of laborers in about 90 countries.

People     3     (observe) this holiday since 1920 to show their     4     (aware) of protecting the working class    5     exploitation (剥削). In China, people don’t need to go to work from May 1st until May 3^rd, many of     6    take this opportunity to meet up friends     7     go for short trips, with no specific public events during the holiday.

A recent report was issued by the China Tourism Academy,    8     (say) that the number of domestic (国内的) tourist trips will reach about 4.55 billion,    9     increase of 73 percent year on year. “China’s tourism market has embarked on a track of recovery this year. And we will see a     10     (continue) ‘travel frenzy (狂热)’ during the May Day holiday,” said Li Huigin, a tourism expert with the China University of Geosciences.