15. The manuscript, _____ you have read a while ago, is now submitted to an academic journal for
a review.
(A) that
(B) what
(C) when
(D) which
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統計: A(11), B(10), C(3), D(99), E(0) #2967790
統計: A(11), B(10), C(3), D(99), E(0) #2967790