题目内容
Do you often hear John ____ 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
答案:C
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题目内容
Do you often hear John ____ 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