[ Modal Auxiliary ]
I can’t understand Martin. I’ve never _____________ understand him.
A. can
B. could have
C. must
D. been able to
Select your answer:

Random Topics:
On, At, BySimple Present and Simple PastPerfect Tenses and Have GotThe First Conditional SentenceModal and Compound NounsSpeech TensesAdverb ClauseIrregular AdjectivesPreposition on TimeModals and ConditionalsOther quiz:
Vocabulary & Grammar › ViewPat told him that she was going away _______weekend.
A. that
B. at a
C. following
D. last
Grammar › View
Laurie ………. with NASA for the past six years.
A. has been training
B. has trained
C. had trained
D. was training
