[ Present Perfect Simple & Present Perfect Continuous ]
Kate has been studying endangered species ___
A. for ten years
B. since ten years
C. ten years
Select your answer:

Random Topics:
Time ConjunctionsQuestion WordsPhrases and ClausesAdjectives and PronounsGrammar Double Object VerbsOffering HelpModals and TensesModal Verbs and ConjuctionsPassive of Modal VerbsFuture Perfect vs Future ContinuousOther quiz:
Possessive Pronouns › ViewThis ball belongs to those boys. This ball is _____________________.
A. its
B. ours
C. theirs
D. hers
Tenses › View
After —————— into the bus we discovered that we ——————– the wrong one.
a) Got, boarded
b) Getting, had boarded
c) Get, boarded
d) Getting, board
