Knowing how long the test would last, the students who finished _______ back and waited until the end of the exam.
_________side of the street is lied with different shops, _________of which sell electronic products.
Only when _____ possible to settle the problem.
They stayed with me three weeks, _____ they drank all the wine I had.
Sometimes we are asked _____ the likely result of an action will be.
When he realized the police had seen him, the man _____the exit as quickly as possible.