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 --- Is Bob still working in your school?

    --- I’m afraid not. He is said        and       in a private school recently.

       A．to resign; to teach           B．to have resigned; to teach

       C．to resign; to be teaching  D．to have resigned; to be teaching

--- Is Bob still working in your school?

    --- I’m afraid not. He is said        and       in a private school recently.

A．to resign; to teach                                       B．to have resigned; to teach

       C．to resign; to be teaching                              D．to have resigned; to be teaching

--- Is Bob still working in your school?

    --- I’m afraid not. He is said        and       in a private school recently.

       A．to resign; to teach           B．to have resigned; to teach

       C．to resign; to be teaching  D．to have resigned; to be teaching

--- Is Bob still working in your school?

    --- I’m afraid not. He is said        and       in a private school recently.

       A．to resign; to teach           B．to have resigned; to teach

       C．to resign; to be teaching  D．to have resigned; to be teaching

--- Is Bob still working in your school?
--- I’m afraid not. He is said        and       in a private school recently.