[ Verb Tenses ]
By 2025, scientists ______ (discover) more about Mars.
A. will have discovered
B. will have been discovering
Select your answer:
Random Topics:
Present Perfect and Present Perfect Progressive TensesUse of Prepositions or ConjunctionsComparativesPerfect TensesInfinitive FormsModal AuxiliaryFrequencyModal Verbs - ObligationBecause of & Inspite ofTime Clauses and ConjunctionsOther quiz:
Grammar › ViewA ____ is the name of a person, place, thing or idea.
A. verb
B. adjective
C. noun
D. adverb
Grammar and Vocabulary › View
We spent the whole afternoon …… around the stores.
A. sightseeing
B. descending
C. wandering
D. progressing