题目内容
--Do you often hear John ___ in his room? --Yes. Listen! Now we can hear him ___ in his room.
A. sing; to sing B. singing; singing C. sing; singing D. to sing; singing
C
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题目内容
--Do you often hear John ___ in his room? --Yes. Listen! Now we can hear him ___ in his room.
A. sing; to sing B. singing; singing C. sing; singing D. to sing; singing
C