B. Listen and choose the right picture (听句子，选图片，每个句子读两遍。)

6. M: The 2022 Olympic Winter Games will be held from February 4th to February 20th in Beijing and Zhangjiakou.

7. M: If you are free this weekend, we will volunteer in the old people’s home.

8. M: Now we all know that the earth is just one of the planets in the solar system.