Last night the party lasted five hours _____ it was over.
| A．since | B．when | C．after | D．before |
--You don't look so well, Mary. What's the matter with you?
--Why?___________.
| A．I'm quite myself | B．Fine, think you | C．I felt bad | D．I'm not myself |
China has hundreds of islands, ___________ is Taiwan Island.
| A．among them the largest | B．and the largest of which |
| C．and the largest of them | D．but in which the largest |
You must have waited here for a long time ,___________you?
| A．mustn't | B．didn't | C．haven't | D．hadn't |
I don't remember___________ to the airport that year.
| A．to be taken | B．being taken | C．having | D．to take |
A man does not know the difficulty of anything_________ he does it personally.
| A．although | B．if | C．because | D．unless |