--Our English teacher is back home from Britain now.--Yes, she _____there for just three months.
Not until I went through his paper ___ what rapid progress he had made in writing.
In front of the classroom___
___sign the contract unless you are sure you understand it.
Eyewitness provides an evidence that he was ___ of the crime.
Wash your hands with soap and water ___ after each contact with the sick person.