40. What does “act up” in Line 5 mean?
(A) to pretend
(B) to misbehave
(C) to brainstorm
(D) to classify
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統計: A(36), B(535), C(34), D(19), E(0) #2927397
統計: A(36), B(535), C(34), D(19), E(0) #2927397