单项选择: She ... carefully , but shi ... nothing.A. heard , listenedB. listen , heardC. heard , listened toD. listened ,heard

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单项选择: She ... carefully , but shi ... nothing.
A. heard , listened
B. listen , heard
C. heard , listened to
D. listened ,heard

D.listened ,heard
她很仔细地听,但什么都没听到.

D

D

B