21. He had told us he felt nervous about the performance, but he seemed perfectly __________ when he walked onto the
stage.
(A) composes
(B) to compose
(C) composing
(D) composed
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統計: A(0), B(2), C(5), D(6), E(0) #2788836
統計: A(0), B(2), C(5), D(6), E(0) #2788836