Jumping out of ___ airplane at a height of 5000 kilometers is ___ unforgettable experience.
| A．an ; a | B．an ; an | C．an ; / | D．a ; an |
---Are you coming to Betty’s wedding?
---I’m not sure. I ______ go to Beijing on business that day.
A. must B would C. should D. might
The children all look forward to _______ the carnival next week.
| A．take part | B．take part in | C．taking part | D．taking part in |
You can trust him because he always ________.
| A．keeps his words | B．stick to his promise |
| C．keeps his word | D．keep his promise |
She speaks English fluently _____ she were a native American.
| A．as though | B．even if | C．as long as | D．ever since |
The reason _______ he felt frustrated was ______ he lost his MP4.
| A．why/that | B．that/why | C．why/because | D．that / because |