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Anna is often heard songs in her room. A. sung B. singing C. sing D. to sing 【查看更多】

 

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Anna is often heard ______songs in her room.                            

       A. sung              B. singing           C. sing              D. to sing

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 Anna is often heard ______songs in her room.                            

A．sung

B．singing

C．sing

D．to sing

 

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