—Obviously, the boss looks happy again, doesn’t he?
—Yes. It’s said that he has ______ the difficult problem.
| A．succeeded in solve | B．tried to solve |
| C．managed to solve | D．been solved |
推荐试卷
—Obviously, the boss looks happy again, doesn’t he?
—Yes. It’s said that he has ______ the difficult problem.
| A．succeeded in solve | B．tried to solve |
| C．managed to solve | D．been solved |
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