[ Subject-Verb Agreement ]
He is tired because he had been ____ (sing) for hours.
A. Sings
B. Sang
C. Sing
D. Singing
Select your answer:

Random Topics:
Verb AbilityAdverbs of How Something is DoneGrammar-Present Continuous-Sentence MakingGrammar - PunctuationFuture Simple TensesPossesive Pronouns and Modals of AbilityPrepositions of MovementSimple Present and Present ContinuousWill, Be going to, Present ContinuousMixed ConditionalOther quiz:
Grammar › ViewWhere ________ last night?
A. have you gone
B. did you went
C. did you go
D. do you go
Question Tags › View
This construction is not very safe, ______?
A. is this
B. isn’t it
C. isn’t this
D. is it
