.“Perhaps she is working for John.” “Yes,she ______ for him.”A.need have been workingB.ought be workingC.may be working D.ought have been working

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.“Perhaps she is working for John.” “Yes,she ______ for him.”A.need have been workingB.ought be workingC.may be working D.ought have been working
.“Perhaps she is working for John.” “Yes,she ______ for him.”
A.need have been working
B.ought be working
C.may be working
D.ought have been working

.“Perhaps she is working for John.” “Yes,she ______ for him.”A.need have been workingB.ought be workingC.may be working D.ought have been working
C.may be working 表示一种可能性,她可能是为约翰工作的