题目内容
In time of serious accidents，_________ we know some basic things about first aid, we can save lives.
查看答案
搜索结果不匹配？点我反馈
更多问题
He was told that it would be at least three more months____ he could recover and return work
In my opinion, life in the twenty-first century is much easier than ________.
Most birds find it safe to sleep in the trees, but ________they have eggs or young chicks, they don’t use a nest.
Leave your key with a neighbor ___ you lock yourself out one day
微信支付 
支付宝支付