Olga has been sleeping for three hours. I think we ____ wake her up, or she _____ sleep at night.
A. were able to / may not
B. mustn’t / didn’t have to
C. ought to / couldn’t
D. should / won’t be able to

Random Topics:
Relative Clauses and etcVerb to beVerb Tenses and ModalsThings in EnglishTOEIC GrammarWill vs be going toTenses and VoicePast Simple TensesModals and Past ModalsPreposition FormOther quiz:
Sentence Types and Conjunctions › ViewCombine: “The teacher entered the room. The students became silent.”
A. The teacher entered the room, and the students became silent.
B. The teacher entered the room, so the students became silent.
C. The teacher entered the room, yet the students became silent.
Nouns & Pronouns › View
New students at Strafford College of Computer Science are advised to take a free students’ guide booklet and review ……………..thoroughly.
A. themselves
B. them
C. itself
D. it
Grammar › ViewThis week I __________________ for English exams.
A. revise
B. am revise
C. am revising
D. revising
Present Continuous Tense › View
My father…………..about the way I behave.
A. always complaining
B. always complains
C. are always complains
D. is always complaining
