题文
We are not ready to go into production yet, for the new switch mechanism isn’t fully ______.
| A.tried out | B.tested out |
| C.worked out | D.turned out |
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We are not ready to go into production yet, for the new switch mechanism isn’t fully ______.
| A.tried out | B.tested out |
| C.worked out | D.turned out |
试题篮
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