GRE Text Completion Question 1469
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Source: CQ
The new vaccine is (i)_____ preventing certain forms of pneumonia and should, therefore, be more widely (ii)_____ in order to prevent outbreaks of the disease.
| Blank(i) | Blank(ii) |
|---|---|
| A effective in | D reconstituted |
| B unsuccessful in | E administered |
| C unverified for | F constrained |