What was your brother like when he was young— He _______ be quiet, but now he’s very outgoing.

_____ people have died of AIDS (艾滋病) since 1981.

It’s difficult for us to __________ each other because we have spent so much time together .

Your sister isn’t at home. Can you help her_______ her baby

While walking around the Xixi National Wetland Park, I found there were tens of thousands of people, young and old, ______ for the flower festival. Beautiful indeed!