seem v. 似乎,好像
apartment n. 公寓
volunteer n.志愿者
exactly adv.正是,精确地
regularly adv.定期地
complain v. 抱怨
exhausted adj.精疲力尽的
convince v. 说服
refuse v. 拒绝
attitude n.态度deserve v. 值得
shortage n. 短缺
community n.社区
economic adj.经济的
dishonest adj 不诚实的
weigh v. 权衡、考虑
design v. 设计
disease n. 疾病
benefit n. v. 好处;有益
blood n. 血液