They____on the program for almost one month before l was arranged to help them. Now, we____on it as no result has come out.
| A．had been working: are still working |
| B．had worked; were still working |
| C．have been working; have worked |
| D．have worked; are still working |
The order came that the medical supplies to Beijing for the H1N1 flu soon.
| A．would be sent | B．should send | C．be sent | D．must be sent |
（年北京市西城区高三5月二模试题）30. — The professor gave a really good speech.
— I suggest you _____ him some specific questions about his work experience.
| A．have asked | B．will ask | C．asked | D．ask |
Jack ________ have fought with the policeman.
—Yes. If one ________ ask for trouble, it can’t be helped.
| A．would; will | B．must; may | C．should; must | D．need; dare |
（年北京市西城区高三5月二模试题）28. It was unusual that such close neighbors ______ not know one another.
| A．could | B．would | C．must | D．should |
—How’s your tour around the North Lake? Is it beautiful?
—Itbe, but it is now heavily polluted.
| A．will | B．would | C．should | D．must |