[ Tenses ]
I’m tired. I _________ for 3 hours!
A. have studied
B. studied
C. have been studying
D. had been studying

Random Topics:
Essential and Nonessential ClausesGrammar RulesComparative AdverbsModal VerbsMust Vs Have toCompound AdjectivesComparatives - SuperlativeWould rather/ would prefer/ would likePast Perfect vs Past SimpleNoun / PronounOther quiz:
Expressing Obligation and Modals › ViewWe use should/shouldn’t to:
A. refuse a permission
B. give advice
C. ask for permission
D. express necessity
Grammar › View
My brother ________to the dentist yesterday.
A. Want
B. Goes
C. Went
D. None of the above
I really plan to buy it but I never have ……………. money.
A. a lot of
B. enough
C. several
Grammar › View
Kaia________her sister after the destructive party.
A. sensored
B. censored
C. censured
