Have you ever worked as______volunteer during the COVID﹣19 pandemic （新冠疫情）？

Yes． It was_____unforgettable experience for me．（　　）

Judy ，is that boy with glasses______new classmate？

Yes． Let's say hello to_________．（　　）

I like these books because they offer me a lot of__ knowledge．（　　）

_____Jane____her brother is going to the movies this weekend． One of them has to stay at home to look after their sick mother．（　　）

Sam______a computer from me yesterday．（　　）