We agreeed ___ here but so far she hasn't turned up yet.
There is a system ________the waste is disposed of using the principles of ecology.
.Only when your identity has been checked ________.
The Southern States wanted to ______ the Union, so the American Civil War ______.
I had not been asked to the party, so I felt ______ and a bit hurt.
---But why ? He simply ignored my words.---He couldn’t have heard you. Look, he’s ________in the book.