[ Grammar ]
Scientists ___________ Mars for decades, searching for signs of life.
A. were exploring
B. have explored
C. was exploring
D. has explored
Select your answer:
Random Topics:
Grammar CorrectionAdjectives with PrepositionAdverbs of frequencyArticle & PrepositionPast and Perfect TensesPrepositions and Adverbs of MovementGrammarVerb PhraseRelative Clauses & Real ConditionalsPreposition and ConjunctionOther quiz:
Tenses › ViewI have moved your chair
A. verbal sentence
B. nominal sentence
Grammar › View
My brother always ask me to _____ when my mother is busy doing laundry.
A. Prepare clothes
B. Get dressed
C. Put clothes
D. Prepare dressed