Topics: Modal, Causative Verb & Elliptical Structure

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My sister is preparing for interview this week, My sister is waiting for interview this week.

(Change to elliptical structure)

A. My sister not only preparing but also waiting for interview this week.

B. My sister is not only preparing for interview but also waiting for interview this week.

C. My sister is not only preparing but also waiting for interview this week.

D. My sister not only prepare but also wait for interview this week.