Choose the correct transitional device: The medicine was expensive; ____, it proved effective.

  • A. therefore
  • B. however
  • C. moreover
  • D. similarly

Explanation

The two clauses contrast, so a contrastive connector such as however, nevertheless or on the other hand is needed. Therefore signals a result, moreover adds a similar point and similarly draws a comparison. Reading both halves before choosing is the reliable method with these questions.

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