The coach, because of the driver’s carelessness, was __________ and crashed over the cliff on such a cold December morning.
From time to time a crocodile has snatched someone _______ he or she is even aware that the crocodile is there.
_____ unemployment and crime are high, it can be assumed that the latter is due to the former.
_____the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
Robert is said ___________ abroad, but I don’t know what country he studied in .
He made another wonderful discovery, ______ of great importance to science.