Before the first nonstop flight made in 1949,it______necessary for all planes to land for refueling.
| A．would be | B．has been | C．had been | D．would have been |
—Did you forget about my birthday?
—____________ I’ve booked a table at Michael’s restaurant for this evening.
| A．So what? | B．I’m afraid so. | C．How could I? | D．For sure. |
—Call me at 9:00. I can’t afford to miss such an important meeting.
—Don’t worry, sir. You will surely be __________.
| A．reminded | B．warned | C．replaced | D．forgiven |
We don’t have to keep these old chairs any more. ________, they are falling apart（支离破碎）.
| A．Therefore | B．However | C．Otherwise | D．Anyway |
—I’m surprised to hear that Sue and Paul have ________.
—So am I. They seemed very happy when I last saw them.
| A．broken up | B．showed up | C．dressed up | D．turned up |
Nowadays school bus safety has drawn much attention nationwide for children’s safety is _______ worries parents most.
| A．why | B．which | C．that | D．what |