1.Some were treated as mentally deficient： many were left
functionally illiterate （文盲的），unable to ever meet their
potential. But in the last several years， there‘s been a
revolution in that we‘ve learned about reading and dyslexia. _________
2.It was in the Unite States which the great advances in nineteenth __________
-century agricultural machinery first came
3.He also found a school of technology what is now part of __________
Carngie-Mellon University.
4. The bar counter is possibly the only site in the British Isles
which friendly conversation is considered entirely appropriate _________
and really quite normal behavior.
5. When there is a will， there is a way. __________
1. that -%26gt； which
2. which -%26gt； that
本句是强调句型It is +被强调部分+that……
3. what -%26gt； which / that
此处是定语从句，修饰先行词a school of technology，该从句缺少主语并且先行词是物所以引导词应该用which或者that.
4. which -%26gt； where或which前加in
定语从句缺少状语，从句先行词是地点，故关系代词使用where或in which.
5. When -%26gt；Where
有志者事竟成。