The first-ever C919, China’s first self-developed passenger jet,    1    (deliver) to China Eastern Airlines in Shanghai on December 9, 2022 and is expected to be put into commercial operation next spring,    2    is a significant milestone in the development of China’s aviation manufacturing (航空制造) industry.

The first C919 has    3    total of 164 seats, including eight seats in business class and 156 seats in economy class.    4    (base) on the initial approval of the CAAC (中国民用航空局), China Eastern also needs to carry out more than 100 hours of test flights    5    (confirm) the operational safety and various operational support capabilities of the aircraft, as the C919 is the first such model    6    (global).

Later, China Eastern plans to put the C919 into commercial service in    7    (city) such as Shanghai, Beijing, Xi’an, Kunming and Guangzhou. Over 20 pilots will serve    8    the first group to operate the C919.

The aircraft industry has entered a new journey of development, and it is of great    9    (significant) in promoting cooperation and innovation in the global aviation industry chain.

So far, the C919    10    (get) 1,115 orders from home and abroad. In March 2021, China Eastern officially purchased the first group of five C919s, and other planes it bought are expected to be delivered in 2023 and 2024.

The history of siheyuan (courtyard house) in Beijing can be traced back to more than 800 years ago     1     Beijing established its status as the capital city. As a kind of traditional Chinese relic, siheyuan represents the     2     (capital) architectural style.

Siheyuan is a closed rectangular space with a courtyard in the center. It     3     (surround) by four houses: the main room, the opposite room, an eastern-wing house and a western-wing house. The housing arrangement is     4     (total) based on the rules of hierarchical system, which aims to keep the order of the family members’ status. The principal house facing the south is inhabited by the head of the family, and his or her     5     (old) son lives in the eastern-wing house, which is believed to be superior     6     the western- wing house. Usually, the opposite house is given to servants and other members. Undoubtedly, siheyuan is a mirror of Chinese culture,     7     (reflect) the sense of belonging in the mind of Chinese people. All the gates are printed red,     8     symbol of luck in China.

Indeed,     9     (know) more about Chinese culture and traditions, visiting siheyuan     10     (be) a smart choice for you. Staying in a siheyuan, learning how to make dumplings and enjoying a local Chinese life, you will get an unforgettable experience here.

Bacolod, the     1     (five) largest city of the Philippines, is called the City of Smiles. It reflects the locals’ positive attitude towards daily life. Tourists from all over the world     2     (welcome) by local people. Bacolod, one of the cities with the best quality of life in the Philippines, has fresh air and wonderful urban greenery space.

MassKara Festival appeared     3     the first time in the early 1980s. And it takes place in October every year. There are various celebrations , such as street performances, mask-making     4     (compete) and parades.

During the festival, people     5     (put) on masks and colorful folk costumes spill into the streets, which     6     (transform) narrow streets into a sea of joy. If you pay a little attention, you will find that expressions on people’s masks are the same: smiling. Besides, there will be     7     number of other activities in the city. Restaurants will also prepare special food and good wine to entertain guests from far away.

    8     Bacolod lacks representative tourist attractions, it is     9     (good) worth visiting because of the wide and clean streets, fantastic markets and     10     (afford) housing prices.