根据括号中所给的汉语写出单词，使句子意思完整正确。
It is a bit colder in Nanjing than in Shanghai in    ▲  (冬季).
It’s such a    ▲  (令人愉快的) trip that I will remember it forever.
The final-term exam is coming soon. The students are busy    ▲  (准备)for it.
In Canada, Children’s Day is better known as National Child Day and is celebrated on  ▲  (11月) 20th each year.
In my school, students not only work hard, but also take part in all kinds of    ▲  (活动), such as dancing, drawing, reading and so on.