--Do you often hear Tom ____in the next room?
--No, but he is often heard____ the guitar in the garden outside.
A.sing; to play B.to sing; play C.sing; play D.singing; play
--Do you often hear Tom ____in the next room?
--No, but he is often heard____ the guitar in the garden outside.
A.sing; to play B.to sing; play C.sing; play D.singing; play
A