He ________ carefully,but he didn't ________ anything.大神们帮帮忙A.listened; heard B.listened; hear C.heard; listen D.listen; hear

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He ________ carefully,but he didn't ________ anything.大神们帮帮忙A.listened; heard B.listened; hear C.heard; listen D.listen; hear
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He ________ carefully,but he didn't ________ anything.大神们帮帮忙A.listened; heard B.listened; hear C.heard; listen D.listen; hear
He ________ carefully,but he didn't ________ anything.大神们帮帮忙
A.listened; heard B.listened; hear C.heard; listen D.listen; hear

He ________ carefully,but he didn't ________ anything.大神们帮帮忙A.listened; heard B.listened; hear C.heard; listen D.listen; hear
答案B listen强调听的动作;hear强调听的结果.didn't为助动词,其后用动词原形,另外but连接两个一般过去时的句子.故选B. 查看原帖>>