----DoyouoftenhearTom

问题详情：

----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 sings; play     C. sing; play    D. singing; play

【回答】

A

知识点：非谓语动词

题型：选择题