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Pregunta 53

Laboratory rules require every visitor to wear eye protection. Every visitor is ___ wear it inside the robotics laboratory.

  1. suppose to
  2. supposed toRespuesta correcta
  3. used to
  4. use to

Explicación

The construction be supposed to expresses an expectation or requirement, so supposed retains its final d. Suppose to omits the participial form required after is.

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Pregunta 53: Laboratory rules require every visitor to wear eye… · Commonly Confused English Words · Questena