They carefully, but they didn’t anything. A. listened; listenB. listened; hearC. heard;

发布时间：2020-08-23 08:35:09

They      carefully, but they didn’t      anything.
A. listened; listen
B. listened; hear
C. heard; listen
D. heard; hear

网友回答

A. listened; listen
(答案→)B. listened; hear
C. heard; listen
D. heard; hear
解析：此句的含义是他们仔细的听了听，但什么也没有听见。前半句强调的是动作，后者强调的是内容，故选B。
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