Remember softly when we are in the reading room.A. talkB. to speakC. not speakD. not to t

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A. talk
(答案→)B. to speak
C. not speak
D. not to talk
解析：此题考查固定短语remember to do sth意思是记住去做某事，表示事情还没有做。Talk强调说的内容，而speak强调说的动作，故选B。