.
He rushed out of the burning house with the little boy in his arms ____________ the roof fell down and the boy was saved.
| A．after | B．as | C．before | D．until |
— Shall we go to see the new film A World Without Thieves?
—_____? Let’s make it tonight.
| A．Why not | B．Why | C．Why don’t | D．Why so |
_________ where the sound lab _________?
| A．Has it decided; will built | B．Is it decided; it built |
| C．Has it been decided; will be built | D．Will it be decided; will be built |
In January, 2004, the United States successfully launched “Spirit”, a Mars Exploration Rover, _____ a new milestone in the history of mankind.
| A．it marked | B．marking | C．marked | D．to mark |
____ he does his work, I don’t mind what time he arrives at the office.
| A．So far as | B．So long as | C．As far as | D．So as |
He is known _____ his being on time, so we don’t know the reason ____ his being late this time.
| A．for; of | B．as; for | C．for; for | D．of; of |