[ Irregular Verb ]
KimKhun has _______ for 12 hours each night since school closed.
A. sleeped
B. slepd
C. slept
D. sleep

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Perfect ModalsAcademic VocabularyGrammar for TOEFLPresent Perfect Simple & ContinuousFigurative Language VocabularyConjunctions, Prepositions and InterjectionsSimple Present TenseTime PhrasesUsed to & would & Past SimpleGrammar Comma UsageOther quiz:
Subject Verb Agreement; Indefinite Pronouns › ViewWhich of the following has the correct subject-verb agreement?
A. Are everyone going to the virtual graduation?
B. Is everyone going to the virtual graduation?
Tenses › View
He does not save as much money as he________ last year
A. did
B. does
C. uses
D. did used
Gerund › ViewGio ________ during the film
A. sleeping
B. sleeps
C. slept
D. sleep
Grammar › View
The windows ___________.
A. are being cleaned
B. is been cleaned
C. are clean
D. are been cleaned
