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The study you have been making ________ the ancient Chinese characters is an instructive job.

A. to                     B. for    C. of             D. from

The study you have been making ________ the ancient Chinese characters is an instructive job.

A. to      B. for   C. of       D. from

The study you have been making _____ the ancient Chinese characters is an instructive job.

       A．to     B．for    C．of     D．from

The study you have been making _____ the ancient Chinese characters is an instructive job.

A．to                             B．for                      C．of                       D．from

The study you have been making ________ the ancient Chinese characters is an instructive job.

A. to      B. for

C. of       D. from