By the time he was twelve, Edison __________ to make a living by himself.
| A．would begin | B．has begun |
| C．had begun | D．was begun |
Mark Twain _____ along the Mississippi River, which was _____ to his writing.
| A．was grown up / benefit | B．brought up / benefit |
| C．grew up / of beneficial | D．was brought up / beneficial |
___ in London, the penniless American wandered on the pavement, ___ to find a job to make a living.
| A．Lost; hoped | B．Losing; hoped | C．Lost; hoping | D．Losing; hoping |
---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 |