1. (2023七下·宁波期中) 阅读下面短文，按照句子结构的语法性和上下文连的要求，在空格处填入一个适当的词或使用括号中词语的正确形式（最多限填三个单词）填空。

Lions will die out in West Africa. They can't live in 99% of their places. The number of the lions will drop (quick). In 20 years. Africa will lose half of the lions. Lions will die out on the earth, too.

Lions can't live in Africa, we don't have enough food or places for lions. There are too people on the earth, so we need more food and more clothes. And we need to make money and keep (health). We go into forests and grassland. Lions have to (find) another place, but people's footprints are here and there. Lions can't find any (place) or enough food. Lions will die out because of no food. There (be) only about 403 lions in West Africa now. People are (kill) lions. It's time people to help lions. But now can we help them? It's a big problem for (we).