题目内容
- Do you often hear John _______ in his room?
-Listen! Now we can hear him ________ in his room.
-Listen! Now we can hear him ________ in his room.
[ ]
A. sing, to sing
B. singing, singing
C. sing, singing
D. to sing, singing
B. singing, singing
C. sing, singing
D. to sing, singing
C
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