You know that Grandparents Day,     1     (take) place on the Sunday after Labor Day every year, is a holiday for celebrating your parents' parents. You might send them a card, or give them a call. But how did the holiday come to be?

In 1956, West Virginia native Marian McQuade was trying to plan a celebration for the elderly    2    (member) of her community. She made the sad discovery that many of the senior citizens in the nursing home didn't often receive visits from their families. So she set out     3     (choose) a day to honor and appreciate grandparents.

Grandparents Day became     4     official holiday in 1978. It's not     5    (actual) just for grandparents, but it's also to give grandparents an opportunity to show love     6     their children's children. Many families have     7     (meaning) ways of celebrating the holiday. Even if your grandparents live far away, that doesn't mean you can’t celebrate with them. Danielle Kirsch    8     (celebrate) by trying a new activity every year with her grandmother Elsie. This year, they will be painting together. Molly Arnold's grandmother is no     9    (long) around, but she still found a beautiful way to honor the holiday. She created a charity in memory of her grandmother,     10     passed away from Alzheimer's disease.

Have you heard of World Book Day? It is a celebration of authors, illustrators（插画家）, books and, most    1    （important）, it's a celebration of reading. It's the    2    （big）celebration of its kind, appointed by UNESCO as a worldwide celebration of books and reading, and marked in over 100 countries all over the world.

The main aim of World Book Day is to encourage children    3    （explore）the pleasures of books and reading by providing them    4    the opportunity to have a book of their own.

Book tokens（代币）will be given to children so they can purchase ￡1 books from    5    specially selected list of titles.

The date of World Book Day    6    （change）every year. In the UK and Ireland, World Book Day is on the first Thursday of March. According to organizers, this date was decided after serious thought and long discussion to take into    7    （consider）religious holidays, school terms and potential conflict with other    8    （activity）.

Everyone    9    loves books can take part in World Book Day. It is devoted to    10    （get）children closer to the books and authors they already love and helping them discover brand new books and authors they will love just as much.

In the ancient times, there used to be so many myths about the moon, and all of     1     (they) made the moon more attractive. On the moon, according to the Chinese myth, lived a goddess named Chang'e, who led a lonely life. In the west, up to now, scientists     2     (study) the moon for many years. I wonder if you have received an     3     (invite) to spend a Human Moon Day, which is officially celebrated on July 20 every year. Human Moon Day marks the first human landing on the moon     4     (success) that occurred on July 20,1969. That explains it! Ever since 1969, Human Moon Day has been celebrated in the US to mark one of the     5     (great) achievements in human history.

Human Moon Day is largely celebrated by NASA and space fans. One way to celebrate Human Moon Day is to make something about the moon like cutting paper     6     (moon). Children are made to bake cookies and cut them in the shape of the moon. They also consider     7     (learn) some facts about the moon on this occasion. Exploring the moon on Google Moon is a great idea of getting familiar with our natural satellite. It is especially important that we celebrate Human Moon Day with children.     8     this way, children can learn about     9     happened on July 20, 1969, and understand the importance of this event in the future. It can be said with certainty that humans will devote all their lives to the research into the moon. As for young people, they must go to all lengths to study hard for the future even if there is a long way to go!

Should there be     10     chance for you to go to the moon, who would you like to go with you?

“I’m old in age, but young in mind. The zoo is my lifetime’s happiness.” Despite various difficulties, for 33 years,    1    82-year-old Chinese man called Luo Yingjiu has been running a small zoo on    2    (he) own in Enshi, Hubei province.

At the one-man Fenghuang Mountain Zoo, Luo serves    3     director, cleaner, breeder, vet and conductor. Most of the animals of the zoo are old and weak, many of    4    were saved by Luo. The zoo’s liontiger and python passed away years ago,     5     (leave) only a bear, some peacocks, a troop ofmonkeys,     6    about 20 dogs.

A ticket only costs 10 yuan (S1.5) per person, and it’s free for children. But the zoo’s appeal to locals is fading. Since the outbreak of the pandemic, the number of visitors    7    (drop) to just several people a day.

While the world changes     8    (gradual), the zoo remains much the same, and so does Luo’s love for the animals. “Many people tell me to rest at this old age, but my wish is     9     (maintain) the zoo with all my heart until my last day. Since I’ve shouldered the    10    (responsible), I shall never quit halfway,” says the former soldier in the local dialect.