[ Modal Verbs ]
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:
Grammar › ViewI’m afraid I’m not hungry anymore. I (already eat).
A. have already eaten
B. has already eaten
C. already ate
D. have already ate
Types of Sentence Structures › View
I will help you, if I can, yet I know little about making jelly.
A. simple
B. compound
C. complex
D. compound-complex
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
