1 . It is believed that the Covid-19 will soon be defeated since the vaccine is a________.(根据首字母单词拼写)

2 . 关于他的罪行，有大量可获取的证据。
There have been large ________ of evidence ________ for the crime he committed.

3 . The committee recommended that the legal aid system should be ______________ (可使用的) to more people. （根据汉语提示填空）