Nobody _ever _to Mars before as the journey is too ...

[ Vocabulary and Grammar ]

Nobody _ever _to Mars before as the journey is too long and unsafe.

A. has travel

B. has travelled

C. had travel

D. had travelled

Select your answer:

Random Topics:
Adverb of Manner Continuous Tense Mixed Present Tenses Grammar and Vocabulary Modals Auxiliary Subjective and Objective Pronoun Simple, Compound, Complex Sentences Passive Voice Active Voice Comparison Degree

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