----- Mary looks very upset. She _______ failed to pass the exam. ----- I guess so. It's very difficult after all. A must have B could have C should have D might have
We suddenly saw the bus about to leave and had to run _____ to catch it.
Be careful how you _____ that jug, it will break very easily.
If we can _____ our present difficulties, then everything should be all right.
. Many university courses are not really _____ to the needs of students or their future employers.
Some areas, _____ their severe weather conditions, are hardly populated.