[ Grammar ]
The __________ scientist continued his research despite the challenges.
A. passionate
B. determined
C. primitive
D. persistent

Random Topics:
Modals of AdvisabilityAlthough, Though, In spite of, DespiteFuture Perfect vs Future ContinuousModals in the PastModals TensesLinking VerbSubjunctiveTenses PracticeComplex Sentences with Adverb ClausesWho or WhomOther quiz:
Grammar › ViewRussia can be one of the most beautiful and exciting travel ______.
A. holidays
B. accommodation
C. destinations
Modals › View
As part of the project guidelines, team members _______submit their progress reports by Friday, but they ________request an extension under certain circumstances.
A. have to / may
B. had better/ must
C. may / must
D. can / have to
Grammar › ViewPeter and Jane _ chess during their free time.
A. play
B. plays
C. playing
Modals and Past Modals › View
Joe practices aikido every day, which is why he _____ win the competition last month.
A. can
B. can’t
C. could
D. couldn’t
