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When you get the paper back,pay special attention to what ______.

A.have marked

B.have been marked

C.had marked

D.had been marked

When you get the paper back,pay special attention to what ______.

A.have marked

B.have been marked

C.had marked

D.had been marked

When you get the paper back,pay special attention to what ______.

A.have marked

B.have been marked

C.had marked

D.had been marked

When you get the paper back,pay special attention to what ______.

A.have marked

B.have been marked

C.had marked

D.had been marked

When you get the paper back,pay special attention to what ______.

A.have marked

B.have been marked

C.had marked

D.had been marked

When you get the paper back, pay special attention to what ________.

A. have marked                B. have been marked   C. had marked    D. had been marked

 When you get the paper back,pay special attention to what ______.

A.have marked

B.have been marked

C.had marked

D.had been marked

When you get the paper back, pay special attention to what ________.

A. have marked              B. have been marked   C. had marked           D. had been marked