[ Verb Tenses ]
By 2025, scientists ______ (discover) more about Mars.
A. will have discovered
B. will have been discovering

Random Topics:
PronounPunctuationsPossessive Pronouns and QuantifiersModal RequestsGrammar Comma UsagePassive Voice & TensesVerb IdentificationPrepositions - ConjunctionsAdjective vs AdverbVerbal PhrasesOther quiz:
Grammar › ViewMy Grandfather _______ some plants in the garden.
A. is watering
B. waters
C. is watered
D. will water
Grammar › View
What is the simple predicate in the sentence below?
Sedimentary rocks form on the bottom of seas.
A. Sedimentary
B. rocks
C. form
D. bottom
Tenses › ViewI ______ my leg while skiing in France last winter.
A. broke
B. am breaking
C. break
D. have broken
Grammar › View
Everyone wants a cute, funny kitten, but adult cats often languish in shelters.
Languish means…
___
A. lacking vitality and growing weak
B. continuing with great force or intensity
