The disappearance of dinosaurs made _______ the evolution and dominance of mammals on the earth.
| A．it was possible | B．it possible | C．possible to be | D．possible |
__ unemployment and crime are high, it can be assumed that the latter is due to the former.
| A．Before | B．Where | C．Unless | D．Until |
______ the police thought he was the most likely one, since they had no exact proof about it, they could not arrest him.
| A．Although | B．As long as | C．If only | D．As soon as |
The medicine works more effectively you drink some hot water after taking it.
| A．as | B．until | C．although | D．if |
Owen wouldn’t eat anything ____________ he cooked it himself
| A．until | B．since | C．unless | D．while |
My parents don’t mind what job I do I am happy.
| A．even though | B．as soon as | C．as long as | D．as though |